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A body mass index (BMI) level not within normal range can also affect semen quality negatively. Being underweight, presented by a low BMI value, was observed in an analysis to decrease the total sperm count and semen volume. No significant changes were observed in sperm concentration and motility due to a low BMI.
No age related effects on sperm were noted in separate control groups recruited in different geographical locations, indicating that dietary habits, lifestyle or ethnicity could play a part in the quality of sperm. While advanced age can be a possible factor in sperm motility and health, the sperm of men below 20 years of age has likewise been ...
Volume can be determined by measuring the weight of the sample container, knowing the mass of the empty container. [29] Sperm count and morphology can be calculated by microscopy. Sperm count can also be estimated by kits that measure the amount of a sperm-associated protein, and are suitable for home use. [30] [unreliable medical source?]
Testosterone is the primary male sex hormone and androgen in males. [3] In humans, testosterone plays a key role in the development of male reproductive tissues such as testicles and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.
Males from India had a 30.3% decline in sperm count, 22.9% decline in sperm motility, and a 51% decrease in morphology over a span of a decade. Doctors in India disclosed that the sperm count of a fertile Indian male had decreased by a third over a span of three decades. [82]
Nearly 50 years of research links two common insecticides used in food, yards and households to dramatically lower sperm count in men worldwide, a new study found.
The research is mixed on whether cycling affects male fertility, including sperm—but doctors offer some tips on protecting your swimmers, if you have concerns.
[2] [1] [17] Anabolic steroids and TRT are both used (either by prescription or illicitly) to mimic the effects of testosterone produced by the body, such as building muscle and maintaining sex drive. [17] [1] [2] However, they also inhibit the body's own production of sperm and testosterone, which can lead to shrinkage of the testicles. [17] [4]
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