Aaron E. Carroll answered readers' questions about this article in a follow-up here. When I was a kid, my parents refused to let me drink coffee because they believed it would "stunt my growth." It turns out, of course, that this is a myth.

Ear buds, ear phones, headphones, Bluetooth® devices-they're everywhere today-plugged into mobile phones, iPods®, MP3 players, computers, tablets, and more. They're used by kids, teens and adults of all ages; and provide private listening in schools, gyms, at home, on the workplace-just about everywhere people spend time.

Part 2 of Molly's story

Molly is a high-performing 16-year-old teen girl in her junior year of high school. She has a nice group of friends, works hard in school and gets excellent grades. Molly also has multiple activities she admits she doesn't really enjoy anymore but feels are necessary to "get into a good college."

Useful

Take care of your heart too

Expensive protein shakes are unnecessary

E-Cigs are not so healthy either

This is the result of no vaccines