Things teens should avoid

Make sure it's safe

Not yet clear if those changes are lasting or meaningful

Sleeping nearby -- but not in same bed -- advised for first year, pediatricians' group says

Study finds hospital admissions for head pain also up; reasons are unclear

Study finds hospital admissions for head pain also up; reasons are unclear

Study seeks to explain why some can enjoy a cup before bed and then sleep, while others can't

Study found more accidents happened in states with less stringent safe-driving regulations

Indoor use promotes harmful nicotine exposure, researchers say

But, medical recommendation is to stay out of game after head injury