How to control your appetite

Plus: Processed foods; a better way to exercise; tick season; poison ivy  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌    ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  

 

YOUR HUNGER HORMONES VIEW ONLINE

YOUR HUNGER HORMONES

This week: The 7 hormones that influence hunger and satiety; how sugar and fat affect your brain; how bacteria could help in the fight against cancer; what you need to know about tick season; the possible link between exercise and menstruation; why poison ivy is getting more toxic; a disturbing surge in STDs.

PHOTOGRAPH BY BRIAN FINKE, NAT GEO IMAGE COLLECTION These 7 hormones influence how much—or little—you eat. Can we influence them? Feeling hungry and feeling full seem relatively straightforward—but the reality is a lot more complicated. Behind the scenes, a constellation of hormones works to regulate hunger, satiety, and fat storage in ways that influence your body weight and health. New medications, like Wegovy and Ozempic, can boost the effects of these hormones—but how we eat, exercise, and manage stress also play a big role in whether we gain or lose weight. HOW TO CONTROL YOUR APPETITE WEIGHT-LOSS DRUGS: What to know about Ozempic, TikTok's favorite weight loss drug +

PHOTOGRAPH COURTESY GETTY IMAGES How highly processed foods affect your brain Much of our food is increasingly manufactured to be irresistible to us. Experts say this trend has long-term health consequences. WHAT FAT AND SUGAR DO TO US

Nutrition and longevity:

• When should you eat? It's just as important as what you eat. • Not all fat is bad. This 'good fat' is one we need more of. • Can fasting help you live longer? Here's what the science says.

ILLUSTRATION BY RUSSELL KIGHTLEY, SCIENCE PHOTO LIBRARY Tumors are packed with bacteria—and, oddly enough, that might be good news Most bacteria living in the human body help us thrive, but recent studies show that some infiltrate tumors, helping them grow, spread, and become more difficult for the immune system to destroy. Experts say this relationship could prove vital for wiping out cancer. A NEW WAY TO FIGHT CANCER? GOOD NEWS: Cancer vaccines are finally showing promise. Here's how they work. +

PHOTOGRAPH BY STEVE GSCHMEISSNER, SCIENCE SOURCE ‌ ‌ ‌ ‌ FROM THE ARCHIVES‌ ‌ ‌  Tick-borne diseases have reached 'epidemic proportions' Best known for spreading Lyme disease, ticks efficiently harbor many harmful bacteria, parasites, and viruses, causing at least 16 diseases in the U.S., and many more worldwide. Infections have more than doubled in the U.S., afflicting many patients with long-term memory problems, overwhelming fatigue, and even red-meat allergies. DIAGNOSING A TICK BITE DISEASE-CARRYING BUGS: Summer means mosquitos, ticks and more. Here's what to know. +

A BETTER WAY TO EXERCISE?

PHOTOGRAPH BY SOFIA JARAMILLO What if there was a better way to exercise—one that took advantage of your menstrual cycle? From elite athletes to TikTokers, more people are trying to tailor their workouts to their periods. But does that work? Here's what the science says. DOES IT WORK?

• New clues are revealing why exercise can keep the brain healthy • This is your brain on nature • No time to exercise? Just 5 minutes still has a big impact.

POISON IVY IS GETTING MORE TOXIC

PHOTOGRAPH BY PETER VAN RHIJNPETER VAN RHIJN/ALL CANADA PHOTOS/ALAMY Poison ivy contains a chemical that can cause a vicious allergic reaction when it comes into contact with skin. Even worse: This plant stands to benefit immensely from climate change. If you don't know what it looks like and spend time out in nature, you’re likely to eventually suffer for it—perhaps terribly. HOW TO SPOT IT

HEALTH NEWS YOU MIGHT HAVE MISSED

MICROGRAPH BY SCIENCE PHOTO LIBRARY STDs are at a shocking high: More than half of new infections were among people aged 15 to 24, and the pandemic lockdowns only tell part of the story. Here's a look at how we got here—and what we can do about it. HOW TO REVERSE THE TREND

How magnesium affects your sleep and anxiety 'Brain food' is real. Here’s what to eat to keep it healthy and strong. Is tap water safe to drink? Here’s what you really need to know. Can gum infections trigger arthritis symptoms? There's growing evidence of a link. A deadly fungus with mysterious origins is raising alarms

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