Weight loss surgery can produce dramatic results, but it seems that keeping the weight off can be a challenge.

Polycystic ovary syndrome (PCOS) and infertility have been well-known dance partners for many years. Now new evidence suggests that PCOS is also dancing with a lot of other chronic health issues.

Obesity and metabolic problems may not always go hand-in-hand. Some obese people may not develop the metabolic changes that are often tied to obesity.

Metabolic syndrome is the name for a group of factors that boost the risk of heart disease and diabetes. Now, it seems metabolic syndrome may also be linked to the "wear-and-tear" of arthritis.

Diabetes patients often gain better control of their disease through healthy lifestyle choices. But when diet and exercise aren't enough, weight loss surgery may do the trick, especially for obese patients.

The practice of blood-letting or bleeding patients was abandoned in the 19th  century when it became clear there was little benefit. New research suggests the barbaric-sounding practice could offer a very real heart benefit.

A soaring increase in the number of teenagers suffering from diabetes means that more than a third of presumably healthy normal-weight adolescents are at risk of heart disease.

Among the most common pieces of advice offered by doctors to their patients: start running, biking, walking, swimming, playing tennis or whatever it takes to get in regular exercise.

Some obese patients develop conditions such as heart disease and diabetes, while others manage to avoid such chronic diseases. That may be because all obesity is not the same.

Not all fat is created equal, especially when it comes to men with excessive weight around the middle. Some with added belly fat may be at an increased risk of developing heart disease and other serious health problems.