But dopamine reward system may also play role in less desirable addictions, expert says
National Wildlife Federation says turn off TVs, computers, venture into nature
Study finds big jump in number of those over 70 who are intimate and enjoying it
Lunch break dialogues drew both together to discuss attitudes, health issues
Family, friends, school impact expression of certain molecular variants, study says
But worrying about things could be protective, a second study suggests
Many 100-year-olds embrace modern technology to stay young, survey finds
Placebo did same, so expert says treat problems with conventional therapy
Older Americans are quite satisfied, while Baby Boomers are the least content, survey shows
Condition keeps them from having friends and mates, survey shows