A Chinese study by scientists from the Harvard School of Public Health has found a link between inhaling second-hand smoke and osteoporosis. They studied 14,000 men and women who lived with at least one smoker every day.
They found that a pre-menopausal woman who lived with one smoker doubled her osteoporosis risk. If she lived with two more smokers, the risk tripled, BBC News reports. The women also had a 2.6 times greater risk for a non-spine fracture, compared to non-smokers, the researchers found.