Attention-deficit/hyperactivity disorder (ADHD) symptoms are associated with onset of nicotine and tobacco use in U.S.

Aches and pains. Pain (think: body aches and a sore throat) is also a tip off that you’re dealing with a virus like a cold.

Feeling a little itchy? Here's how to recognize the most commonly undiagnosed skin irritations, including the one you may ...

According to the World Health Organization (WHO), over 22% of the global population smokes, with more than 9 million ...