The male reproductive system depends on hormones, which stimulate or regulate the activity of the cells and organs, wrote the Cleveland Clinic.
The primary hormones involved are follicle-stimulating hormone (FSH) and luteinizing hormone (LH) which are necessary for producing sperm and testosterone.
Testosterone is important in the development of muscle mass and strength and sex drive.
Several normal, gradual changes occur in the male reproductive system with age. These aging changes occur primarily in the testes.
University of Maryland Medical Center (UMM) reported unlike women and menopause, men don’t experience a major, rapid change in hormone production as they age. Unlike the ovaries, the testes continue the ability to make hormones.
Cleveland Clinic said subtle changes in the testes’ function may occur as early as ages 45 to 50 and more dramatically after age 70. National Institutes of Health (NIH) wrote that testicular tissue mass decreases and the level of testosterone stays the same or decreases very slightly.
However according to the American Academy of Health & Fitness (AAHF), sperm production continues, so men can father children well into their eighties.
Declining testosterone levels, wrote Mayo Clinic, can make most men notice a difference in their sexual response by age 60 to 65. The penis may take longer to become erect, and erections may not be as firm.
It may take longer to achieve full arousal and to have orgasmic and ejaculatory experiences.
NIH added erectile dysfunction may be a concern for aging men. However erectile dysfunction is most often the result of a medical or psychological problem rather than simple aging.
Other changes that come with age, said UMM, affect the epididymis, seminal vesicles, and prostate gland, as they lose some of their surface cells but continue producing the fluid that helps carry sperm.
The prostate gland also enlarges with age as some of the prostate tissue is replaced with a scar-like tissue, wrote NIH. This condition, called benign prostatic hypertrophy (BPH), affects about 50 percent of men.