obesity

It takes researchers years, sometimes decades, to pin down subtle, important findings about your health, but it takes bumbling journalists (or their editors) just a few seconds to screw it all up. Here, a selection of the most misleading headlines, and a few tips to help you spot the hype early.

Since lab mice have been kind enough to start making baby formula for us, it might be nice to pay them back. Luckily, two UCLA scientists have the perfect gift: a bacterial gene that, when inserted into the rat genome, adds a new metabolic pathway that makes it impossible to get fat, no matter the carb content of the mouse's diet.

Surgery dates back to Neolithic times, but some major advances have occurred in the last 20 years that have allowed for previously unthinkable procedures.

While many new techniques have been cool without being clinically relevant, PopSci spoke with with Jeffrey Matthews, the chairman of surgery at the University of Chicago Hospital, to look at some of the advances that have actually helped save lives. And as a bonus, we'll look back at some aspects of surgery that haven’t changed over the decades.

We’ve all heard the news: We’re getting fat. Americans are inactive, McDonald’s-eating smokers with diabetes, right? That’s certainly a generalization, but you know what they say. Where there’s smoke, there’s fire. Tons of research dollars have been poured into studying this historic obesity epidemic. While some may imagine that obesity begins once a child is tall enough to reach the top shelf where mom and dad keep the cookies, a new study points to an even earlier age that jump starts obesity: infancy.

OBESITY IN AMERICA

State Lines

Obesity, defined as a body-mass index (BMI) of 30 or higher, is not equally distributed across the U.S. Check out this map to find out which state is the fattest (hint: it's the namesake of mud pie), which is the thinnest (think Coors Light), and which spends the most money on obesity-related health care (its governor pumps iron).

Read on, after the break, for more of America's (and the world's) fat facts.