Vitamins & Supplements Archive

Articles

Don't waste time (or money) on dietary supplements

In 2022, Americans are projected to spend $35.6 billion on dietary supplements, even though there is little, if any, evidence of benefits. Loopholes in guidelines and clever marketing allow companies to promote these products with misleading promises. While some people may need specific supplements to help with deficiencies, for the average healthy person, following a diet with plenty of fruits and vegetables provides all essential vitamins and minerals.

Magnesium and blood pressure: What's the evidence?

The FDA will allow companies to make certain health claims regarding the consumption of magnesium and a reduced risk of high blood pressure. But the evidence for the link is inconclusive and inconsistent.

Vitamin B12 deficiency can be sneaky and harmful

Like most vitamins, B12 can't be made by the body and must be gotten from food or supplements. A B12 deficiency –– which might stem from a vegan or vegetarian diet, or problems with absorption due to weight loss surgery or aging –– can seriously harm nerves, mood, thinking, energy, and more.

Warning: Hidden ingredients in supplements for weight loss and male enhancement

In December 2021, the FDA warned consumers about an increase in supplements tainted with harmful ingredients, particularly supplements promising male enhancement or weight loss.

Harvard study: Fish oil doesn't prevent depression

A large, randomized Harvard study published online Dec. 21, 2021, by JAMA found that taking fish oil supplements didn't prevent depression in otherwise healthy older adults.

Should you take probiotics?

Probiotics can be helpful in some cases, but it's unclear whether they are safe for all older adults.

How much calcium do you really need?

500 to 700 milligrams of calcium through diet and 800 to 1,000 of vitamin D as a supplement should be adequate to preserve bone density.

Protecting the skin from the sun doesn't increase fracture risk

Protecting the skin from the sun doesn't increase the risk of vitamin D deficiency or bone fracture, according to a recent study.

A healthier butter for your heart?

Naturally occurring plant compounds called stanols can help reduce cholesterol. But they may not be found in large enough amounts in butter substitutes to reduce cholesterol levels in the body. The best way to lower is cholesterol is still by eating a plant-based diet with more fruits and vegetables and less processed foods, reducing consumption of saturated fat, and working to maintain a healthy weight.

FTC orders refunds to people who purchased anti-aging products

The Federal Trade Commission called on companies to issue refunds to people who purchased anti-aging products due to unsubstantiated marketing claims.

Free Healthbeat Signup

Get the latest in health news delivered to your inbox!

Sign Up
Harvard Health Publishing Logo

Thanks for visiting. Don't miss your FREE gift.

The Best Diets for Cognitive Fitness, is yours absolutely FREE when you sign up to receive Health Alerts from Harvard Medical School

Sign up to get tips for living a healthy lifestyle, with ways to fight inflammation and improve cognitive health, plus the latest advances in preventative medicine, diet and exercise, pain relief, blood pressure and cholesterol management, and more.

Harvard Health Publishing Logo

Health Alerts from Harvard Medical School

Get helpful tips and guidance for everything from fighting inflammation to finding the best diets for weight loss...from exercises to build a stronger core to advice on treating cataracts. PLUS, the latest news on medical advances and breakthroughs from Harvard Medical School experts.

BONUS! Sign up now and
get a FREE copy of the
Best Diets for Cognitive Fitness

Harvard Health Publishing Logo

Stay on top of latest health news from Harvard Medical School.

Plus, get a FREE copy of the Best Diets for Cognitive Fitness.

Harvard Health Publishing Logo

Stay on top of latest health news from Harvard Medical School.

Plus, get a FREE copy of the Best Diets for Cognitive Fitness.