Some people online believe many of us have dangerous parasites in our gut and need to flush them out with herbal supplements. Here’s what doctors say about the trend.

All this health tracking might not be actually very…healthy.

There’s a lot of evidence that health tracking can be good for us. Studies have shown that fitness trackers are effective at increasing physical activity, and can pretty accurately detect issues like arrhythmia. And now they’re getting a promotional boost from some very influential people: Secretary of Health and Human Services Robert F. Kennedy Jr., and doctor and wellness influencer Casey Means – President Trump’s nominee for surgeon general and founder of Levels Health, a company that analyzes data from continuous glucose monitors. But even as health wearables have benefits – how do they fit into the Make America Healthy Again vision for health? What does all this data really do for us – and who else could access it?

Brittany is joined by Adam Clark Estes, senior technology correspondent at Vox, and Lindsay Gellman, a freelance journalist who reports on health and business, to get into it.

Want more about modern health? Check out these episodes:
Were Americans actually healthier in the past?
The difference between losing weight & being “healthy” 
Exercise is more important than ever

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It’s likely you have at least one “guilty pleasure.” Maybe it’s romance novels. Or reality TV… Playing video games… or getting swept into obscure corners of TikTok. Neuroscientists say the pleasure response helps us survive as a species. So why do we feel embarrassed by some of the things we love the most? Even if you don’t have these negative emotions, experiencing – and studying – pleasure is not as straightforward as it might seem. For a long time, neuroscientists thought the concept of “pleasure” referred to a singular system in the brain. But as research into the subject grew, scientists realized that pleasure is really a cycle of “wanting” and “liking” – each with separate neural mechanisms. Today on the show, producer Rachel Carlson explores this cycle with researchers, who weigh in on the science of pleasure. Even the kind that makes us feel guilty. 

Read more of Rachel’s story on guilty pleasures. 

Interested in more brain science? Email us your question at shortwave@npr.org.

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