That's why I haven't taken them in the past. Motly because of the effects it can have on our bones. I already know I have osteopenia, the precursor to osteoporosis. I'm on Calcium and Vitamin D3 and have been for years. I just hate this and I know I'm not alone in feeling this way. Honestly, I think I would have gone crazy without having all of you to comiserate with and get advice from! I truly, truly appreciate all of you!! I am way too vain for all of this lol