Vitamins & Supplements

DRI Update for Sodium and Potassium

An expert committee of the National Academies of Sciences, Engineering, and Medicine, which included Alice H. Lichtenstein, DSc, Gershoff Professor at the Friedman School of Nutrition Science and Policy and Executive Editor of Tufts Health & Nutrition Letter, recently reviewed the scientific evidence in order to update the official U.S. and Canadian Dietary Reference Intakes (DRIs) for sodium and potassium.

Magnesium and Migraine

The International Headache Society (IHS) defines migraine as a headache disorder with recurrent attacks (at least five) that last from 4 to 72 hours, are associated with nausea and/or sensitivity to light and sound, and also have at least two of four other characteristics including: pain that is of moderate or severe intensity; throbbing or pulsing; affects only one side of the head; or is worsened by routine activity such as walking. According to the 2017 Global Burden of Disease Study, migraine is a major cause of disability worldwide.

No Heart or Cancer Benefit from High-Dose Vitamin D

The New England Journal of Medicine recently published a study that found high-dose vitamin D supplementation provided no protective benefit with regard to risk of developing either cancer or cardiovascular disease.

Flavanols from Food Likely Better than Supplements

A recent study, published in the American Journal of Clinical Nutrition, determined that isolated flavanols did not have a beneficial impact on systolic blood pressure and other cardiometabolic markers.

Q. I have heard that a person who is allergic to wool should take...

Q. I have heard that a person who is allergic to wool should take vitamin D2 instead of D3. Is this true?

Q. Nutritional websites and Nutrition Facts labels all seem to list different amounts of...

Q. Nutritional websites and Nutrition Facts labels all seem to list different amounts of potassium in one cup of frozen spinach. How can this be?

Q. Does taking omega-3 fish oil help reduce the risk of developing prostate cancer?

Q. Does taking omega-3 fish oil help reduce the risk of developing prostate cancer?

Protein Supplements May Not Help Older Adults Build Muscle

A recent study published in the Journal of Nutrition found that consuming protein supplements did not help active older men build more muscle or gain more strength than resistance exercise training alone. Forty-one men with an average age of 70 completed whole-body resistance training three times a week for 12 weeks. Half the group drank a supplement containing 21 grams of protein after exercise and every night before bed. The other half drank a beverage with the same number of calories but no protein. At the end of the study period, while both groups were able to lift more weight and tests showed increased muscle mass, the protein group did not improve any more than the placebo group.

Omega-3s May Protect Older Adults Heart Health

A study led by a Tufts researcher has found an association between levels of omega-3 polyunsaturated fatty acids in the blood over time and healthy aging.

Q. Ive been hearing a lot about the health benefits of turmeric, but also...

Ive been hearing a lot about the health benefits of turmeric, but also about potential side effects. What does the science say?