On average, women live seven years longer than men, although in some parts of the developing world the gap is not as wide. Men of all ages in industrialized countries are a greater risk of dying than women. This is particularly true of young men and those over 60. At first, it was thought that this difference had biological origins and might, for example, be due to sex hormones. However, a study carried out in German monasteries and convent found that monks lives almost as long as nuns and other women. It seems clear that life style and living conditions play a greater role in life.