The risk of osteoporosis is less common in men than it is in women. Decreases in bone mass occurs at a slower rate for men until ages 65–70, when the rate is the same for men and women. Factors linked to an increased risk of osteoporosis in men include a family history of osteoporosis, regular use of certain types of medication, and lifestyle factors, such as smoking, excessive alcohol use, low calcium intake, inadequate exercise, obesity, and vitamin D deficiency.