A person who needs a flu checkup has aches, pain, fever, fatigue, and other symptoms of the flu, an infection caused by a virus that attacks the lungs, nose, and throat. The flu is caused when you ...

Selene Yeager is a health and fitness writer with over 25 years of experience. Her work has appeared in Shape, O, the Oprah Magazine, Men’s Health, Women's Health, Marie Claire, Good Housekeeping, ...

Erectile dysfunction (ED) is the inability to get or keep an erection firm enough to have sexual intercourse. It’s sometimes referred to as “impotence,” but this term is now used less often. ED can ...