Whether made fashionable by the cast of “Friends" or pushed by the need for an early morning "energy drink," coffee cups are popping up in teenagers' hands across the nation. So, what makes teens ...

When my daughter was around 14 years old, she began to ask if she could have a cup of coffee in the morning like Mom and Dad. As a scientist who studies the effects of caffeine — the ingredient in ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Too much caffeine interferes with sleep. Luis Molinero/Shutterstock.com Curious Kids is a series for children of all ages. If you ...