§ If you have diabetes or diabetes
§ If there is any problem in the pituitary gland
§ If thyroid hormone varies
§ If there is high blood pressure
§ When there is an infection or injury, the way out of the sperm is closed
§ Unrestrained living, smoking, drinking alcohol
§ If there is lack of adequate rest
§ Regular use of medicines for depression
§ If there is excess weight then