What is a risk factor nell’osteporosis

What is a risk factor nell’osteporosis ?
Only in limited cases of osteoporosis can be caused by a single cause, and this is usually of secondary osteoporosis and other diseases. In most patients it is possible to recognize the presence of one or more factors that negatively affect bone metabolism and therefore the role they play in causing osteoporosis in the individual.
In some cases, however, despite the clear presence of osteoporosis, you can not find any in the history of the patient risk factors currently recognized. Not all risk factors are equal: some are called “principal” or “strong” other “secondary” because they have a marginal role or even doubtful.
A common feature of risk factors is relatively slow in producing a clinically relevant outcome, for which there is no evidence of a direct cause and effect may be neglected, or being taken into account when it is too late .