Men over 50 may experience a decline in sexual, physical and intellectual potency. In many respects this is analogous to the menopause, hence the term male menopause. Although this term suggests profound hormonal changes and loss of reproductive capacity these do not occur in men. The hormonal changes are subtle and loss of fertility is relative. Other changes, part of normal ageing, include degeneration of neural tissue, arterial occlusion and loss of tissue turgor.