The folk belief that “interest in sex disappears with age” is widely circulated, yet it diverges sharply from the statistical evidence. Epidemiological studies of older adults’ sexual lives show that substantial numbers continue to have sexual interest and activity into their seventies and eighties. Aging alters sexual desire and function; it does not abolish them.

Hormonal change and desire in men

Male testosterone peaks in the twenties and thirties, then declines gradually at roughly 1-2% per year from the forties onward. This physiological change has attracted medical attention as the male climacteric (andropause, LOH syndrome).

Falling testosterone is associated with reduced libido, fewer morning erections, longer time to erection, and reduced ejaculate volume. The degree of decline varies widely, however, and some men in their eighties maintain testosterone at levels comparable to young men. Observational data suggest that continued sexual activity contributes to maintaining testosterone levels.

The risk of erectile dysfunction (ED) rises with age, driven mainly by vascular and neural change; some reports put ED prevalence above 50% in men in their seventies. Yet even with ED, non-penetrative intimacy such as kissing, embracing, and oral sex can continue, and partner satisfaction depends substantially more on the quality of intimacy than on the form of the act.

Hormonal change and desire in women

Women experience menopause (average around 50-52 years) as a clear turning point, with a sharp drop in oestrogen. Typical sexual changes include reduced vaginal lubrication, thinning of the vaginal mucosa (atrophic vaginitis), vulvar dryness, and increased pain during intercourse.

Whether these bodily changes lower desire itself is debated; the dominant view emphasises an indirect route in which physical discomfort drives avoidance of sex, and desire falls secondarily. That is, oestrogen decline does not directly erase desire so much as discomfort and pain promote avoidance.

Testosterone is also produced in women, by the ovaries and adrenal glands, and declines after menopause with reduced ovarian function. Its influence on female desire is more complex than in men, but several randomised trials report that testosterone supplementation improves desire and sexual satisfaction in postmenopausal women.

The notion of “drying up”

The Japanese expression kareta (“dried up”, “withered”) is used colloquially for older people who have lost sexual desire and interest. The slang karesen denotes a younger woman attracted to elderly men, its etymology rooted in this sense of the “withered” man.

“Drying up” is often spoken of positively, as a calm state free of worldly distraction and no longer driven by desire, but it is also used to beautify and justify the loss of desire with age. In reality, even older men who describe themselves as “dried up” frequently retain nocturnal erections, and the term functions more as a social and psychological label of adaptation than as a hormonal fact.

The reality of sexual activity in later life

The US National Social Life, Health and Aging Project (NSHAP, 2007) reported that 73% of those aged 57-64, 53% of those aged 65-74, and 26% of those aged 75-85 were “sexually active”. Japanese surveys have likewise found that around half of men in their sixties and a quarter in their seventies reported sexual activity at least monthly.

Continued sexual activity is strongly shaped by the presence of a partner, health status, psychological well-being, and relationship satisfaction. Sexual activity declines sharply among older adults bereaved of a spouse, while many revive activity on finding a new partner.

Related Terms

• Libido
• Sex hormones (sei-hormone)
• Male climacteric (dansei-kouneki)
• Erectile dysfunction (bokki-shougai)