Aging: Causes a decrease of the quantity of the bone, therefore any person can suffer it. Inheritance: Persons with a family background of fractures. Some of the genes related with the development of bone mass are known. It is possible to prevent the disease by treating it from childhood. Poor calcium diet: Calcium is a fundamental element in the formation of bone and is present mainly in dairy products (milk, yoghourt cheese and ice cream), although it is also found in other foods like blue fish, dry fruits etc. Gender: Women will suffer osteoporosis after menopause. The proportion is four times greater than in males because women live longer than men, they have a smaller quantity of bone mass, and due to the loss of female hormones (estrogens) at menopause.