Fitness & Nutrition

A survey of parks in 25 major cities find that they're used mostly by young children and teenage boys. Walking loops and other options that would appeal to women are in short supply.

What makes us dislike certain foods? And why is everyone so concerned about what you're eating, anyway? Jane Kauer, an anthropologist who has studied the topic, helps answer our questions.

Scientists have found the first eukaryotic organism that functions fine without mitochondria, the "powerhouses" that make energy for the cells of yeast, humans and other animals.

Under current rules, foods containing more than 3 grams of fat per serving can't call themselves "healthy" on labels. But that excludes many foods, like Kind bars, that contain healthful nuts.

We're told that it's important to keep body mass index below 25. But a study finds that for the lowest risk of death, the magic number has inched up to 27 — in the "overweight" category.

Time is almost up for consumers to tell the FDA what "natural" food means. It's an ancient philosophical question with no easy answers.

The FDA issued a massive recall of frozen fruits and vegetables this week. Here's what you need to know about the nasty bug that's causing all the problems.

Jaime Rangel was 14 when he was diagnosed with Type 2 diabetes. Bike rides helped him get in shape and defeat the illness. Now 26, he's showing other kids from low-income families how to do it.