In the US, the most frequent use of illegal drugs is marijuana. The second most frequent use of illegal drugs was prescription painkillers for non-medical purposes.

When chemotherapy is prescribed for colorectal cancer, doctors don’t always know if it will work for an individual treatment. A new tool might help predict success.

Cancer outcomes are not black and white. There are constantly shifting variables that can change the course of disease. Scientists have scratched beneath the surface of shifts in ovarian cancer cells.

Kids hospitalized for respiratory problems often live in homes where adults smoke. Can healthcare professionals make a difference by talking to parents about secondhand smoke?

Young people that suffer from obesity may think they are healthy enough. But their obesity is putting them at risk for diseases usually found in older people.

Unless a child is involved, age usually isn’t considered when prescribing cancer treatment. A new study finds that might need to be changed for certain leukemia patients.

With a flu pandemic going on, public health authorities are encouraging everyone to get flu shots. But pregnant women may worry – will the shot hurt my baby?

Not so fast. Head injury still bothering you? You might not be allowed to play just yet. "No athlete diagnosed with a concussion should return to play on the same day or while symptomatic," the authors of a recent report said.

There’s a reason it takes a brain surgeon to treat brain cancer. Both the organ and the disease are exceedingly complex. A new finding may offer new ways to treat this aggressive brain cancer.