You may not choose to become a father at aged 77, but from a strictly biological perspective, it is within the realm of possibility. Most men produce sperm for their entire lives.
The male reproductive system is relatively simple; as a result, it generally functions quite efficiently. Sperm are produced in the testicles and stored within the scrotum in a "sack" called the epididymis. During erection, but before ejaculation occurs, the sperm travel from the epididymis to the vas deferens. The sperm is then propelled to the urethra where they mix with other fluids to form semen, which is ejaculated through the tip of the penis.
Maintaining Your Fertility
The average male produces 40-300 million sperm per milliliter (mL) of semen. Low sperm counts are not considered a problem until they get as low as 20 million per mL, which is diagnosed as oligospermia. That may still sound like an enormous number, but statistics show that it is more difficult for couples to conceive at this level.
Conception is difficult at low sperm levels, because even at full count, only a fraction of sperm survive the difficult journey from the vagina through the uterus to the fallopian tubes, where conception takes place. The sperm must be strong swimmers. A man can have a low sperm count but still successfully conceive if his sperm have good motility.
Semen analysis can tell you the quantity and quality of your sperm. If your sperm count is critically low, a drug called clomiphene citrate, which stimulates testosterone production, can sometimes boost sperm creation.
One way to maintain healthy fertility is to adopt a fertility-friendly lifestyle. This can be done by avoiding smoking and alcohol. You can also increase your physical activity, eat right, and maintain a healthy weight.
The temperature of the testicles is one of the most significant factors in fertility. Testicles do not produce sperm well in hot environments. That is why nature, in its infinite wisdom, placed the testicles a few inches from the body. This keeps them cool.
Men who wear tight pants and/or tight briefs, regularly use saunas, jacuzzis, hot tubs, or whirlpools, or even take frequent hot baths, might have lower sperm counts. When you stop these activities or change to looser clothing, it may increase your sperm count.
Other factors that can adversely affect fertility include:
—Take care to protect your testicles while playing sports. If a sport requires a cup, it is a good idea to wear one. It is not unheard of for men to be hit in the testicles with a golf ball or a tennis ball, therefore, it makes good sense to wear a cup whenever you participate in physical activity where your testicles may be hit.
Exposure to Chemicals
—Herbicides and pesticides can affect fertility. If you use them in your garden, be sure to follow instructions carefully and take appropriate precautions. Pesticide residues in food, however, have not been shown to affect fertility.
—Men who are regularly exposed to radiation such as lab technicians may experience fertility problems. If you have x-rays anywhere near the testicles, be sure to have the technician shield your groin area with a lead blanket. The radiation from computer or television screens has not been found to be a problem.
—A review of the literature indicates that cigarette smoking is associated with modest reductions in semen quality, including number of sperm and motility.
—Obesity has been cited as a risk factor for male infertility in studies that looked at couples attempting to conceive.
—Various drugs have been found to affect the number or appearance of sperm in animals and occasionally in humans:
Sulfasalazine—for the treatment of
Cimetidine—for the treatment of
Monoamine oxidase inhibitors—for the treatment of
- Chemotherapy drugs—for the treatment of cancer
If you and your partner have been trying to conceive and are not having success, see your doctor.