A new report from the American Cancer Society warns progress against the disease may be in jeopardy. While overall cancer mortality continues to drop, incidence rates among women and young adults are on the rise.

An international group of medical experts says body mass index is not a reliable way to diagnose obesity. Members of the Commission on Clinical Obesity are recommending new methods that also consider location of excess body fat and objective symptoms of disease.

A new study finds a dramatic increase in the number of adults using ketamine for recreational purposes. Ketamine is a medical anesthetic that has some hallucinogenic effects.

In a new study, people with moderate-to-severe gum disease were found to have altered connections between different brain regions, potentially increasing their risk of dementia.

A new study finds green space helps reduce screen time in children, but access to these spaces is much lower in minority neighborhoods.

Even relatively low levels of physical activity before a cancer diagnosis may lower the risks of both disease progression and death, according to a new study.

A new study finds using GLP-1 receptor agonists to treat obesity in otherwise healthy adults is safe and very effective.

Women with advanced or metastatic breast cancer at the time of diagnosis are more likely to have prevalent heart disease, according to researchers from the MD Anderson Cancer Center.

U.S. News & World Report, working with leading medical and nutrition experts, reveals a list of the best diets for overall health and specific conditions.