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Vitamins & Supplements

Vitamin E supplements have not been shown to improve health, and beta-carotene pills carry risks.

Vitamin E and Beta-Carotene Supplements Not Recommended

The U.S. Preventive Services Task Force released a draft report stating that the risks of beta-carotene supplementation outweigh the benefits for prevention of cardiovascular disease (CVD) and cancer. Beta-carotene supplements have previously been linked to increased risk of lung cancer in smokers and may increase risk of dying from heart disease or stroke. Additionally, the […]
There is no proof that any of the diet supplements on the market consistently help with weight loss.

Supplements and Alternative Therapies Not Shown to Help Weight Loss

An estimated 34 percent of Americans who want to lose weight have tried a weight loss supplement. A new study reviewed 315 randomized controlled trials testing the effectiveness of 14 dietary supplements, alternative weight loss therapies, or a combination of the two. The authors found most of the studies had small sample sizes, short follow-up […]
Vitamin D

Vitamin D Levels Not Associated with COVID-19 Infection

While earlier studies had suggested low blood levels of vitamin D might increase the severity of COVID-19 infection, a recent observational study found that low levels of vitamin D were not associated with getting the virus in the first place. The study tested over 18,000 individuals ages 37 to 56 for anti-bodies indicating past infection […]
No pill (or collection of pills) can replicate the healthful nutrients in whole foods.

Dietary Supplement Myths You Need to Know

In a 2019 poll, 86 percent of Americans surveyed said they took some kind of vitamin, mineral, or other dietary supplement. Ironically, data are...
Vitamin D

Insufficient Evidence for Universal Vitamin D Screening

A new U.S. Preventive Services Task Force (USPSTF) report has concluded there is not currently enough evidence to officially recommend screening vitamin D levels...
More evidence suggests vitamin C, zinc, or vitamin D supplements will not protect you from COVID infection or make illness shorter or less severe.

Nutrient Supplements May Not Help Against COVID-19

Two small randomized clinical trials were not able to demonstrate a benefit of high dose zinc, vitamin C, or vitamin D3 for patients with...
The omega-3 fats EPA and DHA may help fight inflammation, which could slow progression of cardiovascular disease.

DHA and EPA omega-3s may both fight chronic inflammation

Obesity is associated with chronic low-grade inflammation that can increase risk for atherosclerosis, type 2 diabetes, cancer, and poor outcomes with COVID-19. The omega-3...
Dietary supplements, which are largely unregulated, may contain potentially dangerous ingredients not listed on labels.

Specific supplements bought online may contain dangerous ingredients

The U.S. Food and Drug Administration (FDA) has issued a warning to consumers regarding 46 specific weight loss and male enhancement products. Laboratory analysis...

High-Dose Omega-3 Supplements and Cardiovascular Health

A recent large, randomized controlled trial (coauthored by Friedman School Dean and Tufts Health & Nutrition Letter editor-in-chief Dariush Mozaffarian, MD, DrPH) evaluated the...

Turmeric: The “Golden” Supplement

Turmeric, the golden-orange spice commonly known for imparting a yellow hue to curries and mustards, is now trending in golden milk lattes, juice bar...