As women begin to enter their 30s, 40s, and 50s, vitamin D begins to play a more crucial role in bone health as they closely approach menopause.
http://www.medicaldaily.com/vitamin-d-supplements-provide-no-support-womens-bone-health-after-menopause-258066
http://www.medicaldaily.com/vitamin-d-supplements-provide-no-support-womens-bone-health-after-menopause-258066
