As we all age, many of us discover that we have underactive thyroid glands that require medication to treat hypothyroidism.  The medication used is, levothyroxine, and it's a synthetic form of the hormone our thyroid gland produces.  A new study showed, that levothyroxine, taken in excess, can lead to bone fractures.

According to Geriatrician and researcher Paula A. Rochon, MD, MPH, of Toronto's Women's College Research Institute, says thyroid hormone levels naturally decline with age, but...