NATIONAL GEOGRAPHIC HEALTH

TOO MANY SUPPLEMENTS?

This week’s Health newsletter discovers liver damage linked to supplement use is on the rise; explores what sleep aids do to your mind ... and determines which nuts are best for you.

THE BIG STORY

The supplement industry is booming with pills and powders that promise to transform your gut health, speed up your metabolism, and even help you live longer. But supplements aren't regulated like other medications—and some may pose harm.

PHOTOGRAPH BY FRANCESCO ZERILLI/ZERILLIMEDIA/SCIENCE PHOTO LIBRARY

LIVER PROBLEMS RISING LINKED TO SUPPLEMENTS

The supplement industry is booming—but so are serious health issues tied to taking these pills and powders. Here’s what you need to watch out for.

SPOTLIGHT ON YOUR BODY

Researchers record brainwaves along with muscle and eye movements at a sleep lab in Germany. Sleep is vital for your brain health—but a new study suggests that common sleep aids may interfere with one of the mysterious processes that clears out the molecular trash from your brain at night.

PHOTOGRAPH BY GREGOR LENGLER, IAIF/REDUX

A SLEEP AID-DEMENTIA LINK?

Your brain’s natural rinse cycle flows while you sleep. A new study suggests certain medications interfere with that important nightly ritual. Are there deeper implications?

TOP HEADLINES

Here’s how fear affects you

Getting a baby to sleep can be a nightmare.
Sleep experts know a better way.

Would you bathe in beer? Discover if the hype is worth it.

Always cold? Try heated clothing to stay warm while traveling.

Get the rest you need with the right travel pillow

TEST YOUR KNOWLEDGE

Packed with vitamins and minerals, nuts offer a number of health benefits, including lower blood pressure, improved cognitive function, and reduced cholesterol levels. However, different nuts provide different advantages—from fiber-packed almonds to heart-healthy walnuts.

Nuts are surprisingly good for your health, but some nuts are better than others:

Which of these nuts may be the best for you?

A. Almonds
B. Brazil nuts
C. Pistachios
D. Peanuts
E. Walnuts

REVEAL THE ANSWER

Today’s Soundtrack: Hummingbird, Yasmin Williams

Today’s newsletter was edited and curated by David Beard and produced by Alisher Egamov. Thanks for reading! Have a suggestion? Let us know.

SHOP

DONATE

Clicking on the Facebook, Instagram, and National Geographic Channel links will take you away from our National Geographic Partners site where different terms of use and privacy policy apply.

This email was sent to: [email protected]. Please do not reply to this email as this address is not monitored.

This email contains an advertisement from:
National Geographic | 1145 17th Street, N.W. | Washington, D.C. 20036

Stop all types of future commercial email from National Geographic regarding its products, services, or experiences.
Manage all email preferences with the Walt Disney Family of Companies.

© 2025 National Geographic Partners, LLC, All rights reserved.