Whether you are old or young, being overweight or obese is not good for your health. If you are a teenager carrying too much extra weight, you may be in store for serious health problems as you grow older.

Poor people in the United States are more likely to develop kidney disease. Unhealthy diets may have something to do with this gap. A recent study showed poor dietary habits were strongly associated with kidney disease among the urban poor.

Your kidneys are your body's filters. That is, they help rid the blood of waste. So it may follow that what you put in your body can affect your kidneys, especially if you have kidney disease.

Add some salt and your meal might taste a little better. But if eating too much salt is bad for your health, is that extra splash of salt really worth it?

Inflammation occurs with many chronic and acute diseases. Fish oil, a source of omega-3 fatty acids, may help curb this painful symptom.

In many cases, type 2 diabetes can be prevented or reversed through a healthy diet and exercise. When lifestyle changes don't do the trick, obese patients can turn to weight loss surgery.

Obesity can lead to all sorts of health problems, from heart disease to diabetes. Now, it seems obesity can get in the away of kidney donation.

Some obese people take weight-loss drugs to help deal with their health problem. One of these drugs, orlistat, may be harmful.  The drug already carries a black box warning for liver damage, which the FDA added last year.