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Better sperm control

Is there enough? Is the existing supply satisfactory? Are we men enough? Turek said. Last summer, a meta-analysis of studies in which semen was collected over the past 40 years indicated that sperm concentration seemed to have consistently and remarkably declined in the course of a generation. Quiet, probably, because Americans are more used to talking about women and fecundity.
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Men Will Soon Test a Sperm-Stopping Gel for Birth Control

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7 Things You Can Do to Keep Your Sperm Healthy – Health Essentials from Cleveland Clinic

Semen quality is a measure of the ability of semen to accomplish fertilization. Thus, it is a measure of fertility in a man. It is the sperm in the semen that is of importance. Semen quality involves both sperm quantity and quality. Decreased semen quality is a major factor of male infertility. Cryptorchidism , hypospadias , testicular cancer and poor semen quality make up the syndrome known as testicular dysgenesis syndrome.
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Exercise May Be the Key to Better Sperm

After more than a decade of work, government researchers in the U. The clinical trial, which begins in April and will run for about four years, will be the largest effort in the U. Currently, the most effective options men have for birth control are condoms or a vasectomy. In the last major study of a hormonal male contraceptive, which took place in Europe from to , participants received injections of hormones every two months. The replacement testosterone is needed to counteract the hormone imbalances the progestin causes but won't make the body produce sperm.
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