A large, new study of more than one million women finds hormone therapy used during menopause does not raise or lower a woman’s risk for dementia.

A new study finds teens who use marijuana — even just once or twice a month – face higher odds of poor grades, increased anxiety, aggression and low self-esteem.

After a devastating crash severed his spine, two-year-old Oliver Staub was not expected to survive. Groundbreaking surgeries at the University of Chicago Medicine helped him begin breathing and moving again, defying all odds.

A major new study finds nicotine products, including vapes, pouches and cigarettes, can damage the heart. And researchers say the risk is real for both users and non-users exposed to secondhand smoke or vape.

When grandparents pitch in to help take care of their grandkids, mom and dad feel the benefits big time, but researchers say there may be a small drawback for their little ones.

In a new study, women with very early-stage DCIS breast cancer taking tamoxifen alone had higher recurrence rates than researchers expected. But they say the incidence of invasive breast cancer was still low at 5 years, suggesting tamoxifen alone may be an option in “carefully selected patients.”

In a new study, women with uterine fibroids had an 81% higher risk of suffering a heart attack, stroke or other major cardiovascular event within 10 years.

A new study finds acupuncture may help breast cancer survivors struggling with attention, memory and other cognitive problems.

Researchers look at how 10 common activities affect low back pain over the short and long term.