Researchers in both studies say foods rich in Vitamin C and calcium are a better choice than supplements.
Doctors say the sun may help prevent rheumatoid arthritis in women. Researchers followed more than 120,000 nurses in the U.S. for more than 30 years. They found those who spent a lot of time soaking in Ultraviolet B rays had a 21 percent lower risk of developing rheumatoid arthritis. The sun helps the body produce Vitamin D which helps keep bones healthy.
And television may hurt a man's chances of having a child. A new study from the University of Rochester shows young men who watched 20 hours of TV a week - had a much lower sperm count.
Researchers say men can improve their count significantly if they exercise at least 15 hours a week.
(Tetiana Anderson, for CBS News)