Contraceptive Depo-Provera May Weaken Bones
Nearly half of women in study lost bone mass within two years
WEDNESDAY, Dec. 23 (HealthDay News) -- In a study of women who received the "birth control shot" -- also known as depot medroxyprogesterone acetate (Depo-Provera), nearly half lost at least 5 percent of their bone mineral density in the hip and lower spine within two years.
Women who were smokers, who had never given birth and who didn't consume much calcium were at highest risk, and they continued to experience significant losses in the third year of use, according to the report published in the January issue of Obstetrics & Gynecology.