Is melatonin giving you nightmares? Plus, the photos warping your memory; tea's impact on the body

Plus, here's what happens to your body when you give up meat. ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 

MORE NATGEO NEWSLETTERS HERE VIEW ONLINE In today's newsletter: Mushroom, matcha, and yerba mate. Are these brain-boosting coffee alternatives all they claim to be? Plus, the moon's influence on human health and how the thousands of photos on your phone may actually be harming your memory. But first: Millions of Americans are turning to melatonin to aid with sleep. Make sure you know the side effects. THE BIG STORY Micrograph by ALFRED PASIEKA, SCIENCE PHOTO LIBRARY ​What's in melatonin—and is it giving you nightmares? The dosing in these popular over-the-counter sleep supplements can vary wildly from what's printed on the label, which can result in side effects. Here's how to use it safely. READ NOW IN THE SPOTLIGHT Photograph by Liudmila Chernetska, Getty Images Are these coffee alternatives worth the hype? From the brain-boosting effects of guarana to the calming properties of matcha, these drinks offer both an energy lift and enhanced mental focus. MUSHROOM OR MATCHA TOP HEADLINES Photograph by Jaime Rojo The butterfly effect is a real phenomenon—but not how you think How photo overload might be warping our ability to remember Can the moon influence human health? Surprising new research suggests it might. BEFORE YOU GO: Fun fact—coffee and tea drinkers live longer lives than those who don't. But between the two beverages, which is better? READ OUR LATEST STORIES SHOP DONATE SUBSCRIBE 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: 012049@gmail.com. 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.