I recently broke a wrist, and while it mended very quickly I was referred for a bonedensity scan, partly because of my age, 59.  The scan showed that my hip bones had good density, but the bones of my spine were 'thin', and I was prescribed alendronic acid.

 I wonder how reliable such a diagnosis is, since this was the first time my bones were so measured.  Possibly they have alwys been at this density and it is OK for me.

 Also, I am unwilling to take a drug for life, especially one ringed around with cautions as this one is 'Always stay upright after swallowing and don't eat or drink anything for 30 minutes'.  It seems it could be an irritant to the digestive system.