Exercise is key to losing weight and keeping that weight off, which is healthy for the heart. But even without weight loss, physical activity may provide quite a bit of benefit to the heart.

It’s a wide world, and it’s only getting wider. Global rates of overweight and obesity have climbed steadily over the past 30 years, and not one country has been able to reverse the trend.

It's notoriously difficult to lose weight. Researchers may have uncovered at least some answers as to why efforts to lose weight are often less successful for those with lower incomes.

Shifting female hormones can affect wellness and disease alike. Breast cancer, a disease influenced by hormones, also may be affected by women’s body size.

Health advocates worldwide have aimed to cut rates of heart disease and the disorders that trigger it. After a half-century of documented progress on that front, Canadian researchers project a change in the root causes of heart disease in that nation.

Taking prenatal vitamins is important for all pregnant and breastfeeding women. But even these supplements may not give women enough iodine.

Despite trends of people exercising more and having better access to healthy foods, obesity is still a growing and widespread problem in the United States.

There are treatments for chronic obstructive pulmonary disease (COPD). However, there is no cure for the condition. But that doesn't mean that patients with COPD can't take personal steps to improve their disease-related health.

Even after losing weight, many people end up gaining it back later. Does that time spent at a lower weight still come with health benefits?

Some people have genes that make them more likely to develop type 2 diabetes. Weight loss, however, may be the most effective way to lower diabetes risk, regardless of genetic risk.