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It's Tricky to Know Which Supplements Are Safe — Here's What to Avoid

Not all vitamins and supplements are safe. Pieter Cohen, associate professor from Harvard Medical School warns to keep an eye out for these potentially problematic classes of supplements.

By Sean Mowbray; Medically Reviewed by Dr. Ahmad Talha Azam
Mar 28, 2024 6:00 PM
woman looking doubtful about supplements
(Credit: fizkes/Shutterstock)

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Social media is rife with recommendations to consume one supplement or the other. Promising to fill you with energy, enhance your memory, or more, these pills, tablets, drinks, and more can often stand on shaky scientific ground. Knowing which supplement is safe to take is essential.

Vast amounts of supplements are consumed each year; one 2022 survey found that 75 percent of Americans take them, most on a regular basis. That means the industry rakes in billions each year. In the U.S., vitamin and supplement manufacturers revenue topped $40 billion in 2023. Yet, experts warn this booming sector lacks both regulation and oversight.

How To Know If Supplements Are Right For You

Medical experts recommend consulting professionals as a first port of call to discuss specific needs and concerns prior to taking a supplement. This can also help assess whether a supplement is actually necessary through blood tests, if possible. For vitamins and minerals, for example, other steps can include evaluating your diet to ensure you are consuming adequate amounts of nutrient-rich foods.

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