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Clinical Updates
Vitamin K Supplements
This May Reduce Leg Cramps
October 28, 2024
A recent study found high-dose vitamin K to dramatically reduce nighttime leg cramps in older men and women. For details (including the form, dose, and dosing regimen) see the What It Does section of our Vitamin K Supplements Review, which includes our Top Picks among vitamin K supplements.
Also see: Do any supplements, foods, or oils help reduce muscle pain, muscle cramps, or nighttime leg cramps?
Statins & Vitamin K
September 03, 2024
Do statins (e.g., Lipitor, Crestor) affect blood levels of vitamin K and does vitamin K supplementation improve heart-related outcomes among people taking statins? Find out in the Concerns and Cautions section of our Vitamin K Supplements Review, which includes our Top Picks among vitamin K supplements.
Also see: When taking a statin drug like Lipitor or Crestor, are there supplements I should avoid or take?
Also see: When taking a statin drug like Lipitor or Crestor, are there supplements I should avoid or take?
More Vitamin K Products Fall Short
August 19, 2024
Several popular "bone health" supplements have failed to pass our tests for having less vitamin K than listed, and the issue seems widespread according to recent market tests. For more information, see the What CL Found section of our Vitamin K Supplements Review, which includes our Top Picks among vitamin K supplements.
Vitamin K - Name Change
March 15, 2024
The name of one of our Top Picks among vitamin K supplements has changed, although the ingredients remain the same. For details, see our Top Picks among vitamin K supplements.
Vitamin K2 + D to Slow Calcification of Arteries?
February 06, 2024
Does taking vitamin K2 plus vitamin D slow the progression of coronary artery calcification? Find out what a recent study showed in the Heart disease section of our Vitamin K Supplements Review, which includes our Top Pick for vitamin K.
Vitamin K2 & Breast Cancer
January 05, 2024
Does supplementing with vitamin K2, which can be derived from fermented soy (natto), increase the risk of breast cancer? Find out in the Concerns and Cautions section of our Vitamin K Supplements Review, which includes our Top Picks for vitamin K.
Also see: Are there vitamins or supplements that can reduce my risk of breast cancer? Do any increase cancer risk?
Also see: Are there vitamins or supplements that can reduce my risk of breast cancer? Do any increase cancer risk?
Vitamin K and Heart Valve Calcification
April 29, 2022
Can supplementation with the MK-7 form of vitamin K2 slow the progression of aortic valve calcification, a risk factor for cardiovascular disease? See what a new study found in the Heart Disease section of our Vitamin K Supplements Review.
Also see our answer to the question: Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?
Vitamin K and Sleep
March 11, 2022
Can taking vitamin K make it more difficult to sleep? Find out what research suggests in the Concerns and Cautions section of our Vitamin K Supplements Review.
Also see our answer to the question: What are the best supplements for insomnia? Are there any supplements that interfere with sleep?
Vitamin K and Coronary Artery Calcification
October 22, 2021
Can supplementing with vitamin K1 slow coronary artery calcification? See what a new study among people with diabetes found in the What It Does section of our Vitamin K Supplements Review. Also see our Top Picks among vitamin K supplements.
Vitamin K & Risk of COVID Death
January 14, 2021
A marker of low vitamin K levels has been linked to a higher risk of death in people with COVID-19, according to a new study. Get the details in the COVID-19 section of our Vitamin K Supplements Review.
Vitamin K and Breast Cancer Risk
November 17, 2020
Can eating foods high in vitamin K affect the risk of breast cancer? Learn what a recent study showed in the What It Does section of our Vitamin K Supplements Review. Also see our Top Picks for vitamin K supplements.
Warfarin and Low-Dose Vitamin K
October 30, 2020
Should people on warfarin (Coumadin) take low-dose vitamin K to help stabilize fluctuations in INR? Learn what experts say in the What It Does section of our Vitamin K Supplements Review. Also, learn if other blood thinning drugs are affected by vitamin K in the Concerns and Cautions section of our review.
Vitamin K for Weak Bones?
October 12, 2020
Does supplementing with vitamin K2 as MK-7 along with vitamin D and calcium improve bone density in postmenopausal women with weak bones (osteopenia)? Find out what a recent study showed in the What It Does section of Vitamin K Supplements Review. Also, learn about other forms of vitamin K used for increasing bone density and see our Top Picks for vitamin K.
Vitamin K & Heart Health
August 25, 2020
Can taking vitamin K supplements improve vascular stiffness or lower blood pressure in people with kidney disease? Find out what a recent study showed in the What It Does section of our Vitamin K Supplements Review. Also see our Top Picks for vitamin K.
A Role for Vitamin K in COVID-19?
April 27, 2020
A new study showed a link between vitamin K and the development of COVID-19. Learn what this means in the What It Does section of our Vitamin K Supplements Review. Also see our Top Pick among vitamin K supplements.
Vitamin K for Bone Density?
February 17, 2020
Vitamin K (as MK-7) was given daily for one year to older men and women to see if it would improve bone mineral density. Some also received vitamin D and calcium. Find out if it helped, as well as the results of related studies, in the What It Does section of the Vitamin K Supplements Review. Also see our Top Picks among vitamin K supplements.
How To Get Vitamin K From Food
June 07, 2017
Many of the benefits of vitamin K - such as proper blood clotting and calcium utilization for bone and heart health - are associated with getting adequate vitamin K from foods. The good news? Brand new research has found much higher amounts of vitamin K2 (the form associated with cardiovascular benefits) in dairy foods than previously known. However, the amounts vary tremendously depending on whether these foods are full-fat, or reduced-fat or fat-free. Get the details in the "Vitamin K from food" section of the Vitamin K Supplements Review. If you're interested in a vitamin K supplement, see our Top Picks among brands.
Low Dose of Vitamin K Helps Bone
March 30, 2013
Using a much lower dose of vitamin K than in previous studies, a new study found that intake of a particular form of vitamin K decreased age-related decline in bone mineral content and density in certain bones in postmenopausal women. Get the details, as well as our ratings of these supplements, in the updated Vitamin K Supplements Review >>
