A new study by the University of Minnesota in Minneapolis found that teenagers who diet may end up having problems staying slim later in life. To make matters worse, the research shows that teens who use unhealthy ways to lose weight often become trapped in a yo-yo of weight gain and loss. Many young women and men who begin dieting at an early age go to extremes to lose weight, which often becomes a life-long battle with an eating disorder. Read more from Reuters on MSNBC.com.

Short for pro-anorexic and pro-bulimic, "pro-ana" and "pro-mia" websites are gaining popularity. These deadly websites are places where teens struggling with eating disorders can go to find tips and advice on how to lose weight – in very unhealthy ways. Often, these sites promote starvation, saying "it's a beautiful way to live." Parents need to monitor their children's access to websites like these because experts say that the information posted on the sites will prolong their illness or even kill them. Read more online to find out what's being done to combat these websites and which search engine banned all "pro-ana" sites in their index.

Reuters Health recently reported that researchers found that teen dieters often end up being overweight later in life.

"We found that dieting, and particularly unhealthy weight control behaviors, were not effective in weight management over time, and were actually associated with weight gain," study author Dr. Dianne Neumark-Sztainer, of the University of Minnesota, told Reuters Health. "We concluded that dieting was ineffective and even dangerous," she added.

There is also a correlation between adolescents, girls and boys, who diet and obesity and eating disorders. Teenage girls and boys who use unhealthy diet behaviors were the ones more likely to become obese as they mature into adults. These are also the type of dieters who engage in anorexic or bulimic dieting activities. Read more online.