Javascript is not enabled.

Javascript must be enabled to use this site. Please enable Javascript in your browser and try again.

Skip to content
Content starts here


Leaving Website

You are now leaving and going to a website that is not operated by AARP. A different privacy policy and terms of service will apply.

AARP's Survey on Supplements for Brain Health

Results show who's popping what — and how much older adults buy into the memory-boosting promises of supplements

spinner image Man looks at supplement bottles

AARP's Brain Health and Dietary Supplements Survey, released today, shows that Americans age 50 and older are wolfing down the biggest slice of the very large brain-health supplements market, one expected to reach $5.8 billion in sales by 2023.

The survey, which sheds light on the both supplement buying behavior and the possible motivations behind it, also reveals some major misconceptions — for one, that supplements are regulated by the government for things like purity of their ingredients or validity of their claims.

spinner image Image Alt Attribute

AARP Membership

Join AARP for $12 for your first year when you sign up for Automatic Renewal. Get instant access to members-only products and hundreds of discounts, a free second membership, and a subscription to AARP The Magazine

Join Now

The results also show that effectiveness of supplements for boosting memory or brain power is a major concern of those who regularly purchase them — a concern that appears to be more than valid, according to a separate report from AARP's Global Council on Brain Health, also released today. Here's a closer look at who's taking which vitamin, herb or nutraceutical and why.

Survey results show that members of the Greatest and Silent generations are the most likely to be buyers of all supplements, and of those for brain health in particular.

More than three-quarters of adults over age 74 take some sort of vitamin or dietary supplement, as do almost 70 percent of boomers (those between 55 and 73). “The older people are, the more likely they are to turn to supplements because they begin to develop concerns about their health, especially conditions such as dementia,” says Tod Cooperman, president and founder of, an independent evaluator of dietary supplements.

AARP's survey backs that up: It shows that more than a quarter of Americans ages 50 to 73 are regularly taking supplements for their brain health, and that this figure rises to 36 percent for those over 74.

Among adults taking something like gingko biloba or omega-3 tablets, 21 percent report taking dietary supplements to maintain — and 20 percent to improve — their brain health. In addition, 11 percent report currently taking a supplement to delay the onset of dementia, and 8 percent say they take a supplement to reverse dementia.

The most popular supplements adults take for memory enhancement, according to the survey, are omega-3, turmeric/curcumin and green tea.

spinner image membership-card-w-shadow-192x134

Get instant access to members-only products and hundreds of discounts, a free second membership, and a subscription to AARP The Magazine.

Three-fourths of respondents were extremely or somewhat concerned about the effectiveness of the ingredients in such supplements — and with good cause, it seems. Though more than 75 percent of those surveyed said they think supplements can help maintain and improve brain health, and though nearly half think they can help prevent and reverse dementia, there's no scientific evidence to support such beliefs, according to an exhaustive look at recent studies by the AARP Global Council for Brain Health.

AARP's survey found that almost 70 percent of adults who report eating healthfully most days of the week also take some sort of vitamin or dietary supplement. “This may be because these are people who tend to be more conscious of their health in general,” says Cooperman.

See more Health & Wellness offers >

What's more, adults who say they eat the recommended amount of fruits and veggies every day reported better brain health, regardless of whether they take supplements.

"There may be something protective about getting nutrients from food — for example, they're better absorbed by the body — rather than supplements,” Cooperman says.

Seventy percent of survey responders were very or somewhat concerned about supplements’ safety, and three-fourths were worried about purity of ingredients. This is a very valid concern, says Cooperman. While about half of the people surveyed believe that vitamins and minerals are regulated by the U.S. Food and Drug Administration (FDA), and almost 40 percent believe that supplements like herbs are, they're not.

"People assume that there's more oversight by the FDA than there really is,” Cooperman says. Under current law, dietary supplements are considered food, not drugs. That means they aren't put through the same strict safety and effectiveness requirements that both prescription and over-the-counter drugs are.

As a result, they're considered safe until proven otherwise. The FDA can't stop a company from making a certain supplement until it has proof that it causes harm. “The FDA doesn't regulate these companies, so there's no way to make sure that a product contains what's listed on the label, in the right dosage — and some products even have ingredients that aren't listed,” Cooperman says.

If you're considering taking a supplement, “put as much time into it as you would shopping for a car,” stresses Cooperman. Take the following steps to make sure you're safe:

spinner image membership-card-w-shadow-192x134

Get instant access to members-only products and hundreds of discounts, a free second membership, and a subscription to AARP The Magazine.

  • Look for the right label. Look for a product that has a seal of approval from U.S. Pharmacopeia, or NSF International. These three independent organizations all test supplements to make sure that they were properly manufactured, contain the ingredients (and proper doses) listed on the label, and don’t contain harmful contaminants.
  • Always check for interactions between supplements and drugs. Certain supplements can interact powerfully with meds you already may be taking. St. John’s wort, for example, can interact with the blood-clotting drug coumadin, and red yeast rice, often taken for heart disease, can magnify effects of cholesterol-lowering drugs such as statins. Your doctor or pharmacist can provide guidance; you can also go to for more details.
  • Be wary of health claims. By law, dietary supplements can’t claim that the product treats, cures or prevents a certain disease. That means if you see a supplement that states on its label or in its advertising that it can prevent Alzheimer’s or can naturally treat your high blood pressure, stay away.
  • Take supplements correctly. Certain ones, like coenzyme Q-10, curcumin or vitamin D, are fat soluble, which means that they’re much better absorbed if you take them with food, Cooperman says. You can always check a reputable website to find out the best way to take a certain supplement.
  • Be wary of gummies. They may be tasty, but they often flunk ConsumerLab’s testing, says Cooperman. The reason: Gummies are hard to manufacture, and are more likely to break down, so manufacturers often put in more than the listed amount of a given ingredient. As a result, you may get more than you bargained for.

Discover AARP Members Only Access

Join AARP to Continue

Already a Member?

spinner image membership-card-w-shadow-192x134

Get instant access to members-only products and hundreds of discounts, a free second membership, and a subscription to AARP The Magazine.