Avril Lavigne has explained why the lyrics to her songs were also so angry: she was eating too many carbs.

The "Complicated" singer is out promoting her new album, "Under My Skin," and has given this reason for her former angst. “I was eating bad stuff,” Lavigne said. “Lots of sugar and carbs, junk food all the time. It makes you very irritated. I spent some time with a nutritionist and learned I had low blood sugar. Now I eat accordingly.”

You don't need to starve yourself on a wacky fad diet if you want to look look better in your shorts or swimsuit this summer. The secret to weight loss is to choose healthy foods and take in fewer calories than you burn. And it's just easier to make better food choices in summertime, when heavy, high-calorie dishes seem less appealing. The best foods for weight loss in summer are light, refreshing and, most important, keep you out of the hot kitchen.

Do you know why you are overweight? Could it be for any of these top ten reasons?

Weight loss is one of the most important obsessions in American society today. People are constantly searching for a new way to lose weight as fast as possible. Whether you want to fit into that gorgeous dress for your date on Friday night, or you want to get in shape for the upcoming golf season, there are a number of ways that you can lose weight safely and effectively.

Is a fear of getting fatter partly to blame for the fact that nearly one in five American women still smokes, and many don't try to quit?

Although there are many possible reasons for the stubborn persistence of smoking, fear of weight gain is high on the list for many women, says a University of Michigan Health System researcher who has devoted much of her career to studying this issue.

Have you ever wondered why some fat people can be playing tennis, swimming and jogging often, yet they never lose weight?

Many overweight people began playing tennis, walking, running or swimming because they were told that these activities are aerobic and therefore, beneficial to weight loss.

So, is it really true that aerobic activities promote weight loss?

Technically it is true that aerobic programmes do help.

However, what constitutes an aerobic activity is the real issue of contention.