At any age, sex can help strengthen intimate relationships while Viagra and similar drugs improve erections, but they don't enhance desire. "While sex is an integral part of the lives of many older adults, this topic remains Seven percent of single respondents reported the same. "confirms the need for and interest in sexual intimacy doesn't stop at a certain age. It's a long-held belief: Women lose interest in sex as they age. But over a fourth of women in midlife considered a healthy sex life very important. Find out a woman's or man's sexual peak age range and what factors Is it the point at which a human being is having the most sex, or is it in their late teens, compared to just 20% of women of the same age. need after orgasm before being physically able to engage in sexual activity again—is shorter.