Blake Lawrence tried not to think about injuries when he was on the football field. But Lawrence, a junior who until recently played linebacker at the University of Nebraska, could have been forgiven for worrying about his head. In one 12-month span, from spring 2008 to spring 2009, three on-fiel...

When Aaron Laviana started medical school at Georgetown University in 2007, he dissected a cadaver in his first week, in anatomy class. Today, classes such as "Physician-Patient Communication" and "Social and Cultural Issues in Health Care" come first. Dissection doesn't begin until month four at...

It always starts out innocently enough -- for example, with an eye twitch. It's just a little tic, but it keeps coming and going over the course of a few weeks, and so I decide to do a little medical investigation online. I plug "recurrent eye twitch" into my friendly search engine and, after...

Some refer to them as "smile lines," but we're not smiling. We're spending money to get rid of them. Americans spend more than $600 million a year on nonprescription anti-aging facial products, hoping to erase fine lines around the eyes, mouth and elsewhere. At luxury department stores, you can...

Could it have something to do with trendy downtown farmers markets? A report just released from the Centers for Disease Control and Prevention describes Americans' fruit and vegetable consumption, comparing adolescents and adults by state. It found that the highest percentage of adults, 20.1...

THE QUESTION In the short term, eating more healthfully and losing weight have been shown to be effective at preventing diabetes in people considered at risk for the disease. But does the effect last?

We used to hear so much about the destruction of the Amazon rain forest, but lately not a word. So what happened: Did we save it, or not?

"The New Earth From Above" (Abrams, $29.95) Photographer Yann Arthus-Bertrand's 1990 book, "Earth From Above," has graced many a coffee table. This new edition includes 365 stunning aerial photographs, one for each day of the year. According to an introduction by Serge Orru, director general of...

High cholesterol. Early osteopenia. Pre-diabetes. I was stunned by the diagnosis. I had breezed in for my annual checkup last year as a healthy-looking, 125-pound, energetic 59-year-old. Diabetes in particular was a terrifying prospect. My doctor was taking it very seriously.

Who needs to have two doses? How far apart should those doses be, and does it matter if the first dose was the nasal spray or injection? Should the two doses be of the same type?

LONDON -- A growing storm of debris flying around in space is dramatically increasing the risk of orbital crashes, and steps to avoid them will add greatly to the costs of future space flight, British space experts say.

The U.S. military said last week that it is tracking 800 maneuverable satellites on a daily basis for possible collisions and expects to add 500 more non-maneuvering satellites by year's end.