Recent Blog Articles

New Harvard tool helps fact-check cancer claims

Hand pain from arthritis? This may help

Polio: What parents need to know now

Ketamine for treatment-resistant depression: When and where is it safe?

Have lupus? What to know about birth control

Screening at home for memory loss: Should you try it?

Travel tummy troubles: Here’s how to prevent or soothe them

Easy, delicious summer veggie meals will help stretch your food budget

Tracking viruses: The best clues may be in the sewer

Promising therapy if PSA rises after prostate cancer surgery
Staying Healthy
Can vitamin K supplements help protect against heart disease?
On call
Q. I have read that vitamin K supplements can help prevent heart disease. Should I take them?
A. Vitamin K — which is found in high levels in green leafy vegetables like spinach, kale, and romaine lettuce — plays a role in helping the body make blood clotting proteins. Although some observational studies have suggested a heart benefit from diets high in vitamin K, studies of supplements have not shown a protective effect.
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.
Sign Me UpAlready a member? Login ».
Disclaimer:
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
Free Healthbeat Signup
Get the latest in health news delivered to your inbox!