Product Reviews and Information for Blood Sugar

4/22/2022

Cinnamon for Lowering Blood Sugar?

Does taking cinnamon powder or extract help control blood sugar levels in people with prediabetes or type 2 diabetes? See what the latest study, and earlier studies, have found in the Blood sugar, type 2 diabetes and prediabetes of our Cinnamon Supplements Review.

Also see: Which supplements and foods can help lower or control my blood sugar?

8/22/2023

Green Tea and Blood Sugar

A laboratory study showed how green tea might help control blood sugar. Get the details in the Blood Sugar Control/Diabetes section of our Green Tea Review, which includes our Top Picks for green tea.

Also see: Which supplements and foods can help lower or control blood sugar?

2/28/2023

Kombucha for Blood Sugar?

Drinking kombucha (a fermented beverage containing probiotics) with a high-carb meal may blunt the rise in blood sugar after the meal, according to a recent study. Get the details in the What It Does section of our Probiotic Supplements Review, which includes our Top Picks among products.

Also see: Which supplements and foods can help lower or control blood sugar?

8/23/2022

CoQ10 and Blood Sugar

Moderate doses of CoQ10 may lower blood sugar and improve insulin sensitivity in some people, but higher doses may not, according to a recent study. Get the details in the What It Does section of our CoQ10 and Ubiquinol Supplements Review.

Also see: Which supplements and foods can help lower or control blood sugar?

10/02/2021

Peanuts & Blood Sugar Control

Peanuts have been touted for controlling blood sugar, but we took a close look at a recent study used as a basis for this claim. Learn what we found in our answer to the question: Which supplements and foods can help lower or control my blood sugar?

10/09/2021

Tart Cherry and Blood Sugar

Does tart cherry concentrate or capsules help with blood sugar or insulin control? See what a recent study showed in our answer to the question: What are the health benefits of tart cherry juice?

Also see our answer to the question: Which supplements and foods can help lower or control my blood sugar?

10/04/2020

Morning Coffee's Effect on Blood Sugar

Many people reach for a cup of coffee in the morning, but might this impair blood sugar control? Find out what a recent study showed in our answer to the question: Which supplements can help lower or control my blood sugar?

11/05/2016

Cinnamon to Lower Blood Sugar?

A study in people with elevated blood sugar levels found that a particular cinnamon extract (which CL has tested) modestly lowered blood sugar levels. The way the data was analyzed, however, appears flawed in our opinion. Get the details in the "What It Does" section of Cinnamon Supplements and Spices Review >>

11/14/2014

Ginseng for Lower Blood Sugar

A new study found that a certain kind of ginseng helps lower blood sugar levels in people with impaired fasting glucose. For more about this study and related studies on blood sugar and diabetes with other types of ginseng (which have had mixed results), see the Ginseng Supplements Review >> 

3/03/2023

How You Eat a Meal Affects Blood Sugar

The order in which you eat foods during a meal can improve blood sugar control. Learn more in our updated CL Answer about supplements and food for blood sugar control.

3/07/2023

Amla Extract for Blood Sugar?

Did taking amla extract reduce fasting blood sugar or HbA1c in people with type 2 diabetes? Find out in our article about the health benefits of amla extract.

Also see: Which supplements and foods can help lower or control blood sugar?

9/06/2023

Coconut Oil for Blood Sugar Control?

Does coconut oil control blood sugar levels? See what a recent analysis of clinical studies concluded in the Blood Sugar and Insulin Control section of our Coconut and MCT Oils Review. Also see our Top Picks among coconut and MCT oils.

6/07/2024

Supplements for Blood Sugar?

Recent studies suggest that Reducose, a white mulberry extract, and Jinlida, a traditional Chinese medicine, may help with blood sugar control. Learn more in our article about supplements for lowering blood sugar.

11/14/2023

Blood Sugar Control With Bitter Melon?

Bitter melon is promoted for improving blood sugar control, but does it work? Find out what clinical research suggests in our article about supplements for blood sugar control.

3/12/2024

Green Tea & Blood Sugar

Does green tea reduce fasting blood sugar levels? See what a recent study showed in the Blood Sugar Control/Diabetes section of our Green Tea Review, which includes our Top Picks for green tea.

9/17/2024

Probiotic for Blood Sugar Control?

The probiotic Akkermansia muciniphila has been promoted for blood sugar and appetite control, possibly by increasing GLP-1, that same “satiety” hormone targeted by medications like semaglutide (Ozempic). But does it really work? See what evidence suggests in the Blood sugar and appetite control section of our Probiotics Supplements Review, which includes our Top Picks among probiotic supplements.

9/30/2024

GlucoseGoddess for Blood Sugar?

Anti-Spike Formula by GlucoseGoddess is promoted as a natural alternative to blood sugar and weight loss medications such as Ozempic. See our take on this supplement in our article about supplements for lowering blood sugar.

10/24/2024

Oat Cereals & Blood Sugar Control

Do different forms of oats affect blood sugar differently? Yes, and this also depends on how they are prepared, as discussed in the ConsumerTips section of our Oat Cereals Review, which includes our Top Picks among oat cereals.

Also see: Which supplements and foods can help lower or control blood sugar?

3/29/2022

Mulberry Leaf for Diabetes?

Can taking mulberry leaf extract reduce blood sugar or improve insulin resistance in people with type 2 diabetes? Find out what a recent study suggests in our updated answer to the question: Which supplements and foods can help lower or control my blood sugar?

10/12/2021

Mushrooms and Blood Sugar

Find out if supplementing with reishi or oyster mushrooms helps with blood sugar control. See what the latest research showed in our Reishi Mushroom Supplements Review.

9/17/2021

Can Collagen Lower Blood Sugar?

Can taking collagen supplements lower blood sugar levels? Find out what research suggests in the What It Does section of our Collagen Supplements Review. Also see our Top Picks among collagen supplements.

8/19/2021

Diabetes and Fruit Intake

Eating whole fruits is associated with reduced risk of type 2 diabetes and better blood sugar control. But how much fruit is associated with greatest benefit, and what's the role of apples, bananas, and citrus fruits? See what a recent study showed. It's all in our article: Which supplements and foods can help lower or control my blood sugar?

9/07/2021

EVOO vs. Regular Olive Oil

Extra virgin olive oil may be more beneficial than regular olive oil for blood sugar control and satiety, according to a recent study. Get the details in the Insulin Control and Blood Sugar section of our Extra Virgin Olive Oil Review. Also see our Top Picks among extra virgin olive oils.

5/04/2021

Glutathione for Blood Sugar?

Does taking glutathione improve blood sugar control in people with type 2 diabetes? Find out what a recent study showed in our answer to the question: Do glutathione supplements work to prevent aging or for other conditions?

5/12/2021

Black Seed Oil for Blood Sugar Control?

Find out if black seed oil improved blood sugar control in people with prediabetes in our updated answer to the question: What are the health benefits of black cumin seed (black seed) oil?

9/26/2020

Effect of Milk and Sugar in Coffee

A recent study looked at how adding milk and sugar to coffee before a meal affects blood sugar levels. Learn what was discovered in our answer to the question: Which supplements can help lower or control my blood sugar?

5/11/2014

Study Suggests Vitamin D Level for Blood Sugar Control

A certain minimum level of vitamin D in the blood is associated with normal control of blood sugar, according to a recently published study. The study focused on women who were overweight or obese but not diabetic. The vitamin D level is consistent with the range suggested by many other studies. For more details, as well as our tests of vitamin D supplements, see the updated Vitamin D Supplements Review >> 

1/08/2019

Is Taking Vinegar Helpful?

Two studies compared the effectiveness of vinegar pills to liquid vinegar in controlling blood sugar after a meal. See the results in the "Blood sugar control" section of the Apple Cider Vinegar Review. (Also see our Top Picks for apple cider vinegar.)

2/12/2019

Vitamin C for Blood Sugar Control

High-dose vitamin C was found to help control blood sugar levels in people with type 2 diabetes in a recent study. For details, see the What It Does section of the Vitamin C Supplements Review. Also see our latest Top Picks for vitamin C.

8/18/2020

Zinc for Lowering Blood Sugar and Cholesterol?

Zinc may help lower blood sugar as well as cholesterol levels, according to a recent analysis, but the dose and duration of zinc supplementation made a big difference. Get the details in the What It Does section of the Zinc Supplements and Lozenges Review. Also see our Top Picks for zinc.

8/17/2019

Green Tea and Blood Sugar

Can drinking green tea reduce the rise in blood sugar after a meal, and if so, is the effect greater in the morning or evening? See what a new study found in the What It Does section of the Green Tea Review. Also see our tests and Top Picks among green tea supplements, and brewable and bottled teas.

10/15/2019

Vitamin D & Blood Sugar Control

Maintaining moderate levels of vitamin D may aid blood sugar control, but, according to a recently published study, high-dose vitamin D supplementation may not help. For details, see the Diabetes, insulin resistance and glucose control section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.

6/26/2018

Ubiquinol for Blood Sugar Control?

Does giving ubiquinol (the active form of CoQ10) to people with type 2 diabetes help with blood sugar control? Find out in the What It Does section of the CoQ10 and Ubiquinol Supplements Review. (Also see our Top Picks among CoQ10 and ubiquinol supplements.)

7/10/2018

Niagen for Blood Sugar Control?

Niagen, a brand of nicotinamide riboside (a form of niacin), was recently tested in a clinical trial to control blood sugar levels. Get the results in the Niacin section of the B Vitamins Review. (Also see our Top Picks among niacin supplements.)

8/07/2018

Vitamin D and Blood Sugar Control

A recent study adds to the growing evidence that obtaining and maintaining adequate vitamin D levels can help with blood sugar control. For details about this and studies regarding vitamin D and diabetes, see the Diabetes, insulin resistance and glucose control section of the Vitamin D Supplements Review. (Also see our Top Picks for vitamin D supplements.)

9/14/2018

Curcumin for Blood Sugar Control

Does taking curcumin with a meal help control blood sugar levels? See what a study found in the What It Does section of the Turmeric and Curcumin Supplements Review. (Also see our Top Picks among curcumin and turmeric supplements and spices.)

5/11/2019

Best Oats for Controlling Blood Sugar?

A recent study compared the effects on blood sugar and insulin levels of steel-cut oats, old fashioned rolled oats, instant ("quick") oats, and honey nut oat cereal. The surprising results are found in the Oat Cereals Review. Also see our Top Pick for oat cereals.

5/15/2019

How Do "Overnight Oats" Affect Blood Sugar?

We recently reported on the effects of various types of oats on blood sugar. A study by the same researchers has evaluated overnight oats – rolled oats soaked overnight in milk. Find out how overnight oats compare, see the Oat Cereals Review. Also see our Top Picks among oat cereals.

9/10/2019

Apple Cider Vinegar for Type 2 Diabetes?

Studies have shown that taking apple cider vinegar with or before a meal can reduce the subsequent rise in blood sugar. But does apple cider vinegar improve insulin sensitivity in people with type 2 diabetes? Find out what a recent study showed in the Blood Sugar Control section of the Apple Cider Vinegar Review. Also see our Top Picks for apple cider vinegar.

1/04/2020

Curcumin for Blood Sugar Control?

Preliminary research suggests that curcumin (from turmeric) taken with meals can reduce the increases in blood sugar and insulin levels that occur after eating. But does curcumin help people with pre-existing type 2 diabetes? See what a recent study found in the What It Does section of the Turmeric and Curcumin Supplements & Spices Review. Also see our Top Picks among turmeric and curcumin products.

2/08/2020

Glucosamine and Blood Sugar

Glucosamine (used to treat osteoarthritis) is a type of sugar, so does its daily use affect blood sugar levels and one's risk of developing diabetes? Find out in the Concerns and Cautions section of the Joint Health Review. Also see our Top Picks for Glucosamine, Chondroitin, MSM, and Boswellia supplements.

5/30/2017

Olive Oil Helps in Pre-Diabetes

Adding extra virgin olive oil to a meal decreased the rise in blood sugar and increased insulin levels after the meal, according to a new study in people with pre-diabetes. Similar benefits with olive oil have been shown in people with type 1 and type 2 diabetes. For details, see the "Insulin Control and Blood Sugar" section of the Extra Virgin Olive Oils Review, which includes our tests and comparisons of popular olive oils on the market.

8/20/2016

Vitamin D, Blood Sugar & Insulin Resistance

Vitamin D, Blood Sugar & Insulin Resistance --A moderate, daily dose of vitamin D had positive effects on blood glucose and insulin sensitivity in healthy men and women who largely were deficient in vitamin D, according to a new study. Get the details in the Vitamin D Supplements Review >>

8/30/2016

Resveratrol for Blood Sugar?

Despite preliminary studies which found resveratrol to help lower blood sugar in people with type 2 diabetes, a larger long-term study found no benefit. Find out more in the "What It Does" section of the Resveratrol Supplements Review >>

7/12/2014

Whey Protein for Blood Sugar Control?

Drinking a whey protein shake before a meal improves blood sugar and insulin response in men and women with type 2 diabetes, according to a new, preliminary study. Get more details, plus our tests of protein supplements, in the updated Protein Powders and Drinks Review >>

8/26/2012

Curcumin May Help Prevent Diabetes

Past research has suggested a potential role for curcumin (from turmeric) in blood sugar control. A recently published placebo-controlled study of curcumin given daily to people with prediabetes (those with blood sugar levels somewhat higher than normal) produced dramatic results in reducing the percentage of such individuals progressing to diabetes. Get the details in the latest update to ConsumerLab.com's Turmeric and Curcumin Supplements Review -- which includes quality ratings of products and other potential uses of curcumin. More >>

5/02/2023

Cinnamon for Lowering Blood Sugar?

Did taking capsules of true (Ceylon) cinnamon reduce fasting blood sugar or HbA1c in people with type 2 diabetes? See what a new study found in the What It Does section of our Cinnamon Supplements Review, which includes our Top Picks among cinnamon supplements and spices.

6/20/2023

Zinc Caution

Taking very high doses of zinc, even short-term, can cause dangerously low blood sugar in people with no previous history of low blood sugar, as recently highlighted in a series of reports. Get the details in the Concerns and Cautions section of our Zinc Supplements and Lozenges Review, which includes our Top Picks among zinc products.

6/27/2023

Allulose & Blood Sugar

Does using the sweetener allulose along with sugar help lower blood sugar and insulin levels after a meal? Find out what a recent study showed in the Diabetes section of our article about sweeteners.

Also, find out what the main ingredient is in BetterStevia Organic Glycerite. Hint: It’s not stevia.

8/22/2023

Melatonin and Blood Sugar Control

Melatonin supplements may affect blood sugar control and insulin function in people with type 2 diabetes, according to recent studies. Get the details in the Concerns and Cautions section of our Melatonin Supplements Review, which includes our Top Picks for melatonin.

8/04/2023

Berberine for Prediabetes?

Does taking berberine help lower blood sugar and cholesterol in people with prediabetes? Find out what a recent study showed the Berberine section of our Berberine and Goldenseal Supplements Review.

Also see: Which supplements and foods can help lower or control blood sugar?

8/11/2023

Kombucha for Diabetes?

Does drinking kombucha help lower blood sugar levels in people with type 2 diabetes? Find out what a recent study showed in the Kombucha section of our Probiotic Supplements Review.

Also see: Which supplements and foods can help lower or control blood sugar?

3/15/2024

Cinnamon & Blood Sugar

Did supplementing with cinnamon lower blood sugar in men and women with prediabetes? See what a recent study found in our Cinnamon Supplements and Spices Review.

Be aware that lead contamination was recently reported in several brands of cinnamon, as discussed in our Review, which also includes our Top Picks for ground cinnamon to avoid lead and other toxins.

1/09/2024

Xylitol and Blood Sugar

Does taking xylitol, a low-calorie sweetener, affect blood sugar levels? Find out in the Xylitol section of our article about sweeteners and other sugar substitutes.

2/02/2024

Lower Blood Sugar with Aloe?

Does drinking aloe juice right after a high-fat meal reduce spikes in blood sugar and blood fat levels? Find out what a recent study showed in the What It Does section of our Aloe Vera Supplements Review, which includes our Top Picks for aloe.

11/10/2023

Magnesium for Diabetes?

Does magnesium supplementation improve insulin sensitivity or blood sugar control in people with type 2 diabetes? See what a recent study found in the our Magnesium Supplements Review, which includes our Top Picks for magnesium.

Also see: Which supplements and foods can help lower or control blood sugar?

10/24/2023

Does Cocoa Lower Diabetes Risk?

Did supplementing with cocoa flavanols reduce the risk of developing type 2 diabetes? Find out what a large study found in the Blood Sugar, Insulin Resistance and Diabetes section of our Dark Chocolate and Cocoa Supplements Review, which includes our Top Picks for cocoa and dark chocolate.

Also see our article about supplements and food for blood sugar control.

7/09/2024

Alpha-Lipoic Acid & Low Blood Sugar

Although rare, alpha-lipoic acid may trigger an autoimmune condition that causes low blood sugar, as highlighted in a recent case. Learn more in the Concerns and Cautions section of our Alpha-Lipoic Acid Supplements Review, which includes our Top Picks among alpha-lipoic acid supplements.

8/08/2024

Milk Thistle for Diabetes?

Does taking milk thistle lower blood sugar and cholesterol levels in people with diabetes? Find out what a recent study showed in the Diabetes section of our Milk Thistle Supplements Review, which includes our Top Pick among milk thistle supplements.

Also see: Which supplements and foods can help lower or control blood sugar?

10/28/2024

Wellmune for Diabetes?

Does taking Wellmune (which contains beta-glucan) improve blood sugar control in people with type 2 diabetes? Find out what a recent study showed in our article about supplements and foods for controlling blood sugar.

10/07/2024

Curcumin for Diabetes?

Does taking curcumin improve blood sugar and insulin in people with type 2 diabetes? Find out what a recent study showed in the Insulin Resistance and Diabetes section of our Turmeric and Curcumin Supplements Review, which includes our Top Picks for curcumin supplements.

Also see: Which supplements and foods can help lower or control blood sugar?

11/18/2024

Bitter Melon for Prediabetes?

Did supplementing with bitter melon improve HbA1c, fasting blood sugar, or cholesterol levels among people with prediabetes? Find out what a recent study showed in our article about supplements for blood sugar control.

10/16/2020

Resveratrol and Insulin Sensitivity

Can resveratrol improve insulin sensitivity or lower blood sugar levels in people who are overweight? See what a new study showed in the What It Does section of our Resveratrol Supplements Review. Also, see our Top Picks for resveratrol.

4/04/2021

Diabetes & Sardines

Can eating sardines reduce the risk of type 2 diabetes? See what a new study found in the What It Does section of our Tuna, Salmon & Sardines Review. Also see our Top Picks for sardines, canned salmon and tuna.

Learn about the effects of fish oil supplements on blood sugar and insulin sensitivity in our Fish Oil Supplements Review.

6/27/2021

Whey vs Rice and Potato Protein

Whey, rice and potato proteins were found to have different effects on blood sugar and insulin levels in a recent study. Find out how they differ. You can also learn more about these and other protein sources in the ConsumerTips section of our Protein Powders, Shakes and Drinks Review. Also see our Top Picks among protein powders.

9/07/2021

An Avocado a Day?

Does eating an avocado with your meal help reduce abdominal fat or weight, or improve blood sugar or insulin control? See what a new study found in the What It Does section of our Avocado Oil Review. Also see our Top Picks among avocado oils.

8/31/2021

Spirulina for Type 2 Diabetes?

Does taking spirulina help control blood sugar levels in people with type 2 diabetes? See what a study found in the What They Do section of our Greens and Whole Food Powders and Capsules Review.

12/10/2021

Magnesium for Metabolic Syndrome?

Can magnesium supplementation lower blood sugar and blood pressure in people with metabolic syndrome? Learn what a new study found in the What It Does section of the Magnesium Supplements Review. Also see our Top Picks among magnesium supplements.

12/16/2022

Gymnema & Sugar Cravings

Did supplementing with gymnema (which may alter taste perception) curb sugar cravings and reduce food intake in a recent study? Find out in our updated CL Answer about supplements for reducing appetite and weight.

Also see our CL Answer about supplements for blood sugar control to learn about use of gymnema in people with diabetes.

1/27/2023

Cocoa for Insulin Resistance?

Did consuming a large daily amount of cocoa flavanols help women with insulin resistance in a recent study? Find out in the What It Does section of our Dark Chocolate & Cocoa Review. Also see our Top Picks among dark chocolate bars and cocoa products.

Also see: Which supplements and foods can help lower or control blood sugar?

2/07/2023

Whey Protein for Diabetes

Whey protein seems to help control blood sugar levels, and a recent study suggested that it may do more than just slow gastric emptying and increase insulin levels. Get the details in the Diabetes section of our Protein Powders and Shakes Review. Also see our Top Picks for whey protein.

5/19/2020

"Whole Grain" Is Not Enough

Not all "whole grain" products are equal when it comes to minimizing swings in blood sugar, according to a new study. Get the details in the Benefits section of the Oat Cereals Review. Also see our Top Picks among oat cereals.

2/01/2020

Pomegranate for Memory?

Pomegranate juice and supplements have been promoted for improving cardiovascular health, controlling blood sugar, and inhibiting prostate cancer. Most recently pomegranate juice was tested in a year-long study for its effects on memory. Find out if it helped, and see if it works for other touted uses, in the What It Does section of the Pomegranate Juice and Supplements Review Article.

2/04/2020

Berberine vs. Colon Cancer?

A large study investigated the potential for berberine (promoted for blood sugar control) to prevent precancerous colon polyps. Find out if it worked in the What It Does section of the Berberine & Goldenseal Supplements Review. Also see our Top Pick for berberine.

7/23/2019

Extra Virgin Olive Oil and Diabetes

Several studies have looked at the effects of consuming extra virgin olive oil on improving blood sugar control. The most recent study looked at whether it could delay the need for glucose-lowering medication in people with type 2 diabetes. Get the results in the What It Does section of the Extra Virgin Olive Oils Review. Also see our Top Picks among products.

3/30/2019

Apple Cider Vinegar & Diabetes

Can apple cider vinegar help control blood sugar in people with type 2 diabetes? See what a recent study found in the What It Does section of the Apple Cider Vinegar Review. Also see our Top Picks for apple cider vinegar.

1/05/2019

Is Protein Best Before or After a Meal?

A new study showed that the timing of protein supplementation around a meal can determine the effect on blood sugar in people with insulin resistance. Find out the best timing in the update to the Protein Powders, Drinks, and Shakes Review. (Also see our Top Picks among products.)

7/21/2020

Cinnamon for Prediabetes?

Does taking a daily cinnamon supplement help control blood sugar in people with pre-diabetes? See the results of a recent study in the What It Does section of the Cinnamon Supplements & Spices Review. Also see our Top Picks among cinnamon supplements and among cinnamon spices.

5/05/2018

Cinnamon for Arthritis

Taking cinnamon as a supplement was found to decrease symptoms of rheumatoid arthritis in a recent study. Get the details and learn what else cinnamon can do (particularly regarding blood sugar) in the What It Does section of the Cinnamon Supplements & Spices Review. (Also see our test results for popular cinnamon supplements).

6/09/2018

Magnesium & Metabolic Syndrome

A study shows that magnesium can significantly help some people suffering from metabolic syndrome (i.e., high blood sugar, high blood pressure, and related symptoms). Get the details in the What It Does section of the Magnesium Supplements Review. Also see our Top Picks among magnesium supplements.

5/22/2019

Does Tart Cherry Juice Help?

A recent clinical trial investigated the effects of Montmorency tart cherry juice on blood sugar control, markers of inflammation, and the gut. Find out if it helped. See our updated answer to the question: What are the benefits of tart cherry juice?

10/09/2018

Cocoa for Diabetes?

Cocoa flavanols may help control blood sugar, but do they offer benefits to people with diabetes? See what recent studies are finding in the What It Does section of the Cocoa and Dark Chocolate Review. (Also see our Top Picks among products).

6/28/2017

Some Concern About Theobromine in Dark Chocolate

ConsumerLab's tests of dark chocolates show them to contain about as much theobromine (a caffeine-related stimulant) as heart-healthy flavanols. So is all this theobromine good or bad? A recent study suggests that it may be an issue for people who need to control their blood sugar, while, on the positive side, it lowers LDL "bad" cholesterol. Get the details in the "Concerns and Cautions" section of the Cocoa Powders, Dark Chocolate, Extracts, Nibs, & Supplements Review, which includes comparisons of the amounts of theobromine in popular products, as well as amounts of flavanols, caffeine, and contaminants.

7/05/2017

Dark Chocolate & Appetite

A recent study found that women consumed fewer calories after eating dark chocolate than after eating milk or white chocolate. Dark chocolate also resulted in better blood sugar control — an effect noted in other studies of moderate consumption of dark chocolate. Get the details on this and other effects of dark chocolate in the "What It Does" section of the Cocoa and Dark Chocolate Review, which includes our tests and comparisons of popular products.

7/12/2017

Fat Fish vs. Lean Fish

If you are trying to control your blood sugar, it turns out that your choice of fish can make a difference. Learn more in the "What It Does" section of the Fish Oil Supplements Review. The review includes our Top Picks among omega-3 supplements.

2/27/2018

Ginseng Role in Diabetes

Results of a recent study suggest that a form of ginseng can help control blood sugar in people with type 2 diabetes. Get the details in the What It Does section of the Ginseng Supplements Review.

8/19/2012

Can Resveratrol Help Control Blood Sugar?

A new clinical study suggests potential benefits for people with type 2 diabetes taking one of the resveratrol products evaluated by ConsumerLab.com. Get the details in the latest update to ConsumerLab.com's Resveratrol Supplements Review. More >>

7/12/2014

Vitamin D & Calcium for Diabetes Due to Pregnancy

A new study found supplementation with a combination of vitamin D and calcium improved fasting blood sugar levels, serum insulin levels, and insulin sensitivity in women with gestational (pregnancy-related) diabetes. For more details, including dosage, as well as our tests and comparisons of vitamin D and calcium supplements, see the update to the Vitamin D Supplements Review (Including Calcium, Vitamin K, Magnesium) >>   

10/22/2016

Cocoa Lowers Blood Sugar

In addition to potential cardiovascular, memory, and other benefits, a new analysis shows that cocoa flavanols may reduce fasting glucose and improve insulin resistance. Get the details in the "What It Does" section of the Cocoa and Dark Chocolate Review >>

3/02/2016

Ginseng for Metabolic Syndrome?

A study in men with metabolic syndrome found no benefit on blood sugar levels from taking ginseng, but a small increase in testosterone. Get the details about this and other uses for ginseng, as well as our quality ratings in the Ginseng Supplements Review >>

8/29/2024

Sucralose & Diabetes

Does using sucralose (Splenda) instead of sugar in coffee and tea improve blood sugar control in people with type 2 diabetes? Find out what a recent study showed in our article about sugar substitutes, which includes our Top Picks among sweeteners.

9/03/2024

fatty15 For Overweight/Obesity?

Does taking the fatty acid pentadecanoic acid (aka C15:0 fatty acid, found in fatty15) reduce weight or improve blood pressure, cholesterol, or blood sugar levels among people who are overweight or obese? Find out what a recent study showed our article about C15:0 fatty acid.

6/23/2023

Vitamin D & Diabetes Risk

In people with prediabetes, does taking vitamin D improve blood sugar regulation and decrease diabetes risk? Find out what a recent study showed in the Diabetes, insulin resistance and glucose control section of our Vitamin D Supplements Review.

Also see our Top Picks for vitamin D.

7/07/2023

Olive Oil & Inflammation

Does high-polyphenol extra virgin olive oil decrease inflammation compared to regular olive oil? See what a recent study found in our Extra Virgin Olive Oil Review.

Also see our Top Picks among extra virgin olive oils and learn what impact these oils may have on insulin and blood sugar control.

7/25/2023

Fenugreek Benefits?

Do fenugreek supplements lower blood sugar, increase testosterone, or have other potential health benefits? Find out in our new article about the health benefits and safety of fenugreek.

3/10/2023

Stevia & Appetite?

How do beverages sweetened with stevia or other low-calorie sweeteners affect blood sugar and appetite compared to sugar-sweetened beverages? See what a recent study found in our updated article about stevia and other alternative sweeteners.

11/04/2024

Try Taking Cinnamon This Way

A recent study suggested that taking cinnamon as a powder may be better for controlling blood sugar than taking it as a capsule. For details, see our Cinnamon Supplements and Spices Review, which includes our Top Picks among cinnamon supplements and spices.

Also be aware that the FDA recently reported high levels of lead in yet another cinnamon powder.

6/25/2024

Is Molasses Better Than Sugar?

Is molasses, including blackstrap molasses, better for you than sugar? Find out in our article about sugar substitutes.

1/25/2020

Stevia vs. Sugar for Hunger Suppression

How does the non-caloric sweetener stevia compare to sugar in suppressing hunger before a meal? Find out in our updated answer to the question: What are the health benefits of stevia? Is it safe?

4/25/2023

Acesulfame K (Ace-K)

How does the sweetener acesulfame K (Ace-K), found in products such as Sunett and Sweet One, compare to sugar and is it safe? Find out in our updated article about stevia and sugar substitutes.

3/31/2023

Agave, Honey & Maple Syrups

Are agave syrup, honey, or maple syrup healthier than table sugar? Find out in our updated article: Pros and Cons of Stevia and other Sugar Substitutes.

12/06/2022

Allulose vs. Sugar

How did the taste of the low-calorie sweetener allulose compare to table sugar, stevia, and sucralose (Splenda) in a recent study? Find out in our updated article about stevia and other natural sweeteners.

7/29/2024

Calories in Glycine?

A CL Member reported seeing the sweetener glycine promoted as containing no calories. They asked if this is true. It's not. Find out how manufacturers can get away with this in our article about sugar substitutes, which includes our Top Picks among sugar substitutes.

2/09/2024

Sweeteners for Cold Drinks

If you're trying to avoid sugar, see our top 2 sweeteners for cold drinks in our article about sugar substitutes, which also includes our top choices for hot drinks and for baking.

3/01/2024

Sweeteners and Bladder Pain

If you suffer from bladder pain, find out which sweeteners have been associated with increased pain in our article about sugar substitutes. Also see our Top Picks among sugar substitutes.

7/18/2023

Aspartame & Cancer

A group of experts recently classified aspartame as "possibly carcinogenic." Learn what evidence was used to support this classification, and find out if all experts agree with it, in the Aspartame section of our article about sugar substitutes.

3/24/2023

Questions About Sweeteners

Learn about polydextrose, sorbitol, and trehalose in our article about the Pros and Cons of Stevia and Other Sugar Substitutes.

Also find out if stevia loses sweetness during storage.

8/08/2023

Sweeteners & Obesity

Is long-term use of aspartame, saccharin or sucralose linked with increased body fat, weight gain, and risk of obesity? See what a recent study showed in our updated article about sugar substitutes.

4/04/2023

Sweeteners - Aspartame Intake Limits and Side Effects

• How many diet sodas would need to be consumed to exceed the acceptable daily intake limit for aspartame?
• Have sweeteners been linked with ringing in the ears? Read about rare reports with aspartame and saccharin.
• Are tagatose or glycine good options for use as sugar substitutes?

4/07/2023

Lakanto Without Erythritol?

We previously reported that Lakanto Monkfruit Sweetener is mostly erythritol, with very little monk fruit. However, not all Lakanto products contain erythritol. Get the details in the Monk Fruit section of our article about the Pros and Cons of Sugar Substitutes.

1/13/2023

Lifestyle Changes for Tinnitus?

Find out if research supports the following lifestyle changes for reducing symptoms of tinnitus:

• Boosting fiber intake
• Avoiding refined sugar
• Restricting salt intake
• Using bimodal stimulation devices

8/12/2024

Erythritol & Clot Risk

A new study suggests a link between high use of the low-calorie sweetener erythritol and increased risk of clot formation (a cardiovascular concern). Learn more in our article about the pros and cons of sugar substitutes.

8/26/2024

Maple Syrup for Heart Health?

Did maple syrup have a better effect on heart-related risk factors in overweight adults than an equal amount of table sugar in a recent study? Find out in the Maple syrup section of our article about sweeteners, which includes our Top Picks among sweeteners.

6/11/2024

Xylitol & Heart Risk

The sweetener xylitol was recently linked with an increased risk of heart attacks, stroke, and death, although this does not prove cause-and-effect. Get the details in our article about sugar substitutes, which includes information about xylitol and 15 other low-calorie sweeteners.

6/14/2024

Is Xylitol in Toothpaste Unsafe?

Use of Xylitol was recently linked with increased risk of heart attacks, stroke, and death, but does xylitol in toothpaste or salivary stimulants for dry mouth pose a concern? Find out in our article about toothpastes and other dental products, which inlcudes our Top Picks.

Also, find out if intake of regular sugar has been linked with heart-related concerns.

3/08/2024

Sweeteners and the Heart?

Is there a higher risk of atrial fibrillation in people who drink artificially sweetened beverages? Find out what a recent study found in our article about sugar substitutes.

3/05/2024

Sweeteners for Keto Diet

See which sweeteners are our Top Picks for those on a low-carb or ketogenic diet. We’ve added this to our article about sugar substitutes.

2/23/2024

Sucralose (Splenda) and Gut Microbiome

Does sucralose (such as in Splenda) significantly alter the gut microbiome? Find out what research shows in our article about sugar substitutes.

9/15/2023

Early Puberty from Sweetener?

A common sweetener was linked with early puberty in girls in a recent study. An increased risk of cancer has also been reported. See the details in our article about sugar substitutes.

8/02/2015

Prebiotics for Immune Health

Prebiotics are complex sugars which can support the growth of probiotic organisms in the gut. A recent study reported a specific type of prebiotic increased amounts of beneficial bacteria and improved certain markers of immune function in older men and women. Get the details, including dosage, plus our tests of popular probiotics and prebiotics in the Probiotic Supplements Review >>

8/11/2023

Getting an Accurate Blood Pressure Reading

A new study shows why choosing the right-sized blood pressure cuff is critical for an accurate reading. Get the details in the blood pressure monitors section of our article about supplements and blood pressure.

5/10/2024

Supplements and Blood Pressure

Find out which supplements may increase or decrease blood pressure, and learn what to look for when selecting a home blood pressure monitor, in our article about supplements and blood pressure.

9/27/2024

Size Matters with Blood Pressure Cuffs

The standard cuff that comes with some popular at-home blood pressure devices may cause an inaccurate reading for some people. Learn what a recent study of devices sold on Amazon showed in the Choosing a device to monitor blood pressure section of our article about supplements for lowering blood pressure.

3/21/2015

Vitamin D for Blood Pressure?

Low levels of vitamin D in the blood are associated with high blood pressure. However, a recent review of many studies concludes that giving vitamin D doesn't help lower blood pressure. For more details about this and other potential uses of vitamin D, as well as our test-based reviews of products, see the Vitamin D Supplements Review >>

6/24/2014

Vitamin D May Help Lower Blood Pressure

A recent study in people with mild to moderate high blood pressure showed that taking a vitamin D supplement helped lower blood pressure. Subjects in the study were already taking a calcium channel blocker (nifedipine), but taking vitamin D reduced blood pressure by several additional points. For details, including the dose of vitamin D used, as well as our tests of vitamin D supplements which can provide this dose, see the updated Vitamin D Supplements Review (Including Calcium, Vitamin K, and Magnesium) >>    

3/28/2014

Fish Oil Lowers Blood Pressure

Fatty acids from fish and fish oil may reduce blood pressure, particularly in those with high blood pressure, according to a recently published review. For details, information about other uses of fish oil, and our tests of fish oil supplements, see the updated Fish Oil and Omega-3 Fatty Acid Supplements Review >> 

5/20/2012

B Vitamin May Lower Blood Pressure

According to a new study, approximately 10% of the population is genetically prone to high blood pressure which may respond dramatically to a low dose of riboflavin (vitamin B-2). Read the update to the B Vitamin Supplements Review for details, including the dose used and amount of blood pressure reduction achieved. More >>

4/30/2012

Vitamin C and Blood Pressure

Vitamin C supplements may modestly reduce blood pressure, particularly among people with elevated blood pressure, according to a review of the latest clinical studies. Get the details, as well as our tests of vitamin C supplements, in the updated Vitamin C Supplements Review. More >>

12/13/2016

Cocoa for High Blood Pressure?

A new study in which people with mild hypertension were given a cocoa beverage and dark chocolate daily for eight weeks found that it only helped lower blood pressure when people were taking certain blood pressure-lowering medications. For more details about this and other studies with cocoa and dark chocolate, as well as our tests and comparisons of products, see the "What It Does" section of the Cocoa Powders, Dark Chocolate, Extracts, Nibs & Supplements Review >>

8/28/2020

Acetyl-L-carnitine + Alpha-Lipoic Acid for Lowering Blood Pressure?

We were recently asked if taking a combination of acetyl-L-carnitine and alpha-lipoic acid can help lower blood pressure. Find out what research shows in the What It Does section of the Acetyl-L-Carnitine Supplements Review. Also see our answer to the question: Which supplements can help to lower blood pressure?

8/21/2020

Beetroot for High Blood Pressure?

Beetroot juice can lower blood pressure – but by how much? Learn what a recent study showed in our updated answer to the question: Can beetroot juice or supplements help lower my blood pressure?

11/06/2018

Flaxseed Oil for High Blood Pressure?

Does flaxseed oil (which is rich in the omega-3 fatty acid ALA) help lower blood pressure in people with high blood pressure? Learn what a recent study found in the What It Does section of the Flaxseed Oil Review. (Also see our Top Picks for flaxseed and other seed oils.)

9/09/2024

Potassium for High Blood Pressure?

How much potassium intake is recommended if you have high blood pressure and how should you get it? Find out in the Potassium Supplements Review, which includes our Top Picks for potassium as well as good options for potassium-enriched salts.

Also see: Which supplements can help to lower blood pressure?

4/30/2024

Flaxseed and Blood Thinners

Does flaxseed have a blood-thinning effect, and might it interact with blood thinners such as warfarin (Coumadin) or apixaban (Eliquis)? Find out in the Concerns and Cautions section of our Flaxseed Review. Also see our Top Pick for flaxseed (whole and ground) and flaxseed oil.

11/28/2023

L-Arginine & Blood Pressure

Find out why L-arginine should be used cautiously if you are taking medication that reduces blood pressure (including medications for ED) in the Concerns and Cautions section of our L-Arginine Supplements Review.

Learn about other supplements that can affect blood pressure.

11/10/2023

Hibiscus for Blood Pressure?

Can supplementing with hibiscus flower in capsule or tea form help lower blood pressure? Find out in our article about supplements for lowering blood pressure.

2/09/2024

Coffee & Blood Pressure

Does drinking regular coffee increase blood pressure in people taking blood pressure-lowering medication? See what a recent study showed in our article about coffee and heart health.

5/05/2023

Getting an Accurate Blood Pressure Monitor

Many of the best-selling blood pressure monitoring devices sold on Amazon in the U.S. and Canada aren’t validated for accuracy, according to a recent study. We’ve added information about this and how to find a validated device to our article about supplements that can affect blood pressure.

5/09/2023

Blood Thinners

We’ve updated our list of supplements that may impact the effectiveness of blood thinners such as Eliquis (apixaban) and Xarelto (rivaroxaban). Get the details.

Also find out which supplements may impact the blood thinning effects of warfarin.

2/07/2023

Strontium and Blood Tests

Strontium is included in some "bone health" supplements, but be aware that very high doses of strontium may interfere with blood tests for calcium and bone density scans. Get the details in the Concerns and Cautions section of our Calcium and Bone Health Supplements Review, which includes our Top Picks among products.

Also see: Which vitamins and supplements should be stopped before getting blood work and laboratory tests?

12/09/2022

Blood Pressure Meds and Potassium

Be aware that many blood pressure-lowering medications can increase potassium in the blood to dangerous levels, as was recently reported. Get the details in the Concerns and Cautions section of our Potassium Supplements Review.

10/28/2022

Citrulline for Blood Pressure?

Does L-citrulline supplementation help lower blood pressure? Find out what a recent study showed in the Citrulline section of our L-arginine Supplements Review.

Also see our answer to the question: Which supplements can help to lower blood pressure?

5/24/2022

Saffron and Blood Thinners

Saffron may interact with blood-thinning medications such as rivaroxaban (Xarelto), according to a recent report. Get the details in our updated answer to the question: Are there supplements I should avoid when taking apixaban (Eliquis) or similar blood thinner drugs like Xarelto?

8/02/2022

Hawthorn for High Blood Pressure?

Can taking hawthorn lower blood pressure in people with hypertension? Find out what research shows in our updated answer to the question: Which supplements can help to lower blood pressure?

7/29/2022

Cocoa Flavanols & Blood Pressure

Do the flavanols in cocoa and dark chocolate lower blood pressure? See what a recent study found in people with normal blood pressure, as well as results for people with hypertension.

7/22/2022

Fisetin & Blood Pressure

A CL member taking anti-hypertensive medication reported that a dose of fisetin reduced her blood pressure for several hours. Find out if this is a known effect in our updated Fisetin article.

Also see our CL Answer about supplements that may affect blood pressure.

7/08/2022

Which Supplements to Stop Before Blood Work?

Find out which vitamins and supplements can interfere with blood tests, urine and stool tests, and even imaging tests, and when these supplements should be stopped in our new answer to the question: Which vitamins and supplements should be stopped before getting blood work and laboratory tests?

8/14/2021

J&J Vaccine Blood Clot, Guillain-Barre Risk

How common are blood clots and low platelet counts or Guillain-Barre syndrome after the J&J vaccine?

2/01/2022

Vaccines, Blood Pressure, and Thyroid Symptoms

Find out if COVID-19 vaccines increase blood pressure or worsen symptoms of thyroid conditions.

9/28/2022

Microplastics & Blood Clots

A recent study raised concern about microplastics causing blood clots. Get the details in our Water Filter Pitchers Review.