A new study involving more than 100 million people found recreational drugs like marijuana, cocaine and amphetamines significantly raise the risk of stroke – even in younger users.

A new study finds patients with chronic back pain experience ordinary noise as more intense and unpleasant.

In a new study, high schoolers exposed to high pollen counts during exam season scored lower, especially in math and science.

A new report from the American Cancer Society finds colorectal cancer is increasingly affecting younger adults. The analysis also highlights rising rectal cancer cases, late diagnoses in people under 50, and ongoing gaps in screening.

The number of new breast cancer cases worldwide is predicted to surpass 3.5 million by 2050. But researchers say targeting six lifestyle risk factors could help change the trajectory.

The American Gut Project tests 21 at-home gut microbiome kits from seven companies and finds “major discrepancies.”

A new study finds transcranial magnetic stimulation, used for treatment-resistant depression, can provide significant symptom relief in just days instead of weeks.

A major, new evidence review finds taking a daily aspirin has little to no benefit for people at average risk of colorectal cancer, but it can cause dangerous bleeding and possibly stroke.

A new study finds cancer patients who develop a new mental health condition are at increased risk of mortality in the first one to three years after diagnosis.