Vitamins & Supplements

Q: Is it true that you need both DHA and EPA omega-3s for cardiovascular...

Answer : Most algae-based omega-3 supplements do contain only DHA (docosahexaenoic acid) and not the other important omega-3 found in fish...

Q: Is it true that increasing magnesium intake can help migraine sufferers?

Answer : Jennifer Hall, a dietetic intern at Tufts Frances Stern Nutrition Center, looked into this for us.

Q: Ive been hearing a lot about the benefits of vitamin K2, and my...

Answer : Sarah L. Booth, PhD, director of Tufts HNRCA Vitamin K Laboratory, responds: Currently the clinical trial data do not support a protective effect of vitamin K2...

Q: Is there really a noninvasive test that can measure antioxidants in the body?...

Answer : C-Y. Oliver Chen, PhD, a scientist in Tufts HNRCA Antioxidants Research Lab, answers: Yes, there is a non-invasive scanner that evaluates total carotenoid content in skin.

Q: If I ate as much food every day as listed in your One...

Answer : Actually, we did compute the calories in our example of how to get 5,419 milligrams of potassium from a days worth of meals...

Q: Is there any difference in effectiveness between vitamin D supplements in soft gel...

Answer : Vitamin D expert Bess Dawson-Hughes, MD, director of Tufts HNRCA Bone Metabolism Laboratory, replies...

Q: I enjoyed your Special Report on potassium (March). Coconut water supposedly has only...

Answer : Health & Nutrition Letter editor Irwin H. Rosenberg, MD, replies, There are no downsides to the consumption of coconut water that I am aware of.

Q: How high should the blood level of vitamin D be? I take 3,500...

Answer : Bess Dawson-Hughes, MD, director of Tufts HNRCA Bone Metabolism Laboratory, answers: Current recommendations are based on the effect of vitamin D ...

Q: Does strontium help strengthen bones, and if so what are the sources of...

Answer : Although strontium is the 15th most abundant element on the planet, its found more in rocks than in food.

Q: How does taking supplements differ from eating foods fortified with calcium?

Answer : Bess Dawson-Hughes, MD, director of Tufts HNRCA Bone Metabolism Laboratory, says it depends on bioavailability...