As people age, they may experience physical changes, illnesses, or emotional upheavals, such as the loss of a partner, that can lead to a decline in sexual interest and behavior
In women there is a gradual decline in the function of the ovaries and in the production of estrogen
Decreased estrogen leads to thinning of the vaginal walls, shrinking of the vagina and labia majora, and decreased vaginal lubrication
These conditions can be severe enough to cause the woman pain during intercourse
Women who were sexually active either through intercourse or through masturbation before menopause and who continued sexual activity after menopause are less likely to experience vaginal problems
Women can use hormone-replacement therapy or hormone-containing creams to help maintain vaginal health
In men, testosterone production declines over the years, and the testes become smaller
The volume and force of ejaculation decrease, and sperm count is reduced, but viable sperm may still be produced in elderly men
Erection takes longer to attain, and the time after orgasm during which erection cannot occur (the refactory period) increases
Medications and vascular disease, diabetes, and other medical conditions can cause erectile dysfunction
The middle years can often lead to problems for married couples who do not understand some of the challenges they are going through during the middle years
A man's aging crisis can be related to the pressure he feels "to make it"
A woman's aging crisis can be related to concerns and anxiety she feels about her physical appearance
These changes have direct implications for their sexual relationship