health

The Troubled History Of The Foreskin

Common in the US, declining in popularity in Australia, rare in Europe and now championed in Africa, male circumcision is hotly debated. Jessica Wapner explores whether the gains are worth the loss.


These Mice On A Treadmill Show Weight Loss Drugs In Action

Cheap, effective and — above all — safe weight loss drugs could help ease the obesity epidemic. These mice demonstrate how a new weight loss jab called morpholino works, as they scuttle along a treadmill.


Are We Doomed To Get Rashes From Our Fitness Trackers?

Constant 24/7 fitness tracking can have itchy, scratchy consequences. Those would be wrist rashes, as Fitbit users have been learning. But rashes aren’t just a Fitbit problem — any wristband can leave you red, thanks to some basic biology. There may be no miracle cure for this malady of the quantified self.


Sun Keeps Damaging Skin Cells For Hours After Exposure

When you think you’ve had enough sun, you probably move into the shade. But, according to a new study, that might not be soon enough — because it turns out that sun keeps damaging skin for hours after exposure.


This Contact Lens Can Zoom In With A Wink Of The Eye 

This little cone of plastic that fits on your eyeball is actually an extremely thin telescope that can be turned on and off with a simple wink of the eye.


Skin From Human Cadavers Helps Wounds Heal Better 

Scientists have a promising if slightly grisly treatment for wounds: skin from human cadavers stripped of everything but its cells. Sound weird? Let me explain.


The Site Where Doctors Share X-Rays Of Weird Things In People's Butts

You and me, we have Wikipedia. Radiologists, they have Radiopaedia. If you can get past the clinical language, you can see it for what it really is: An amazing cache of images that show the human body at its extreme limits. And a place to find (and share!) x-rays of weird stuff people have put up their butts.


Could Genetically Engineered Bacteria In Your Colon Replace Vitamins?

It’s easy to forget how horrifying the effects of a vitamin deficiency can be. Each year, up to 500,000 children in the developing world go blind from lack of vitamin A, half of whom will then die within 12 months. The molecule that could save their lives is so well-studied and abundant, yet we haven’t figured out how to get it to them.


Fitbit Charge HR Review: This Is The One You Want

Fitbit is such a tease. In October, the company announced three new fitness trackers just in time for the holiday gift-giving season — but decided not to ship two of them till 2015. Well, having now spent time with the Charge, Charge HR, and Surge, we believe the Charge HR is the one you want.


I Almost Replaced My Birth Control With An App

I don’t need to tell you there’s no great birth control option right now. Hormonal contraceptives are like a carnival ride for your mood, IUDs are physical sperm-gates that need to be surgically shoved up your vaginal canal, and show me someone who tells you condoms feel good and I will show you a liar. That’s why the promise of hormone-free, noninvasive birth control with a smartphone app, crazy as it sounds, is so alluring. A Swedish app called NaturalCycles almost made me a believer.