Osteoporosis occurs when you lose too much bone, or make too little, or both. Your bones become porous, weaken and can leave you at risk of fractures or broken bones. Osteoporosis can be considered a silent disease; people can't feel their bones getting weaker and it's revealed once an accident happens or they break a bone. Women are more likely to have osteoporotic fractures because our bones are smaller and we lose bone mass faster through hormonal changes around the time of menopause.