The largest cause of infertility in men (90%) is low sperm count, poor sperm quality or some combination of the two. These two occurrences can be caused by genetics, environment, disease, lifestyle habits and more.
The main causes of infertility in men is low to no sperm count. There may also be birth defects involved in addition to issues with semen ph levels.
As I have read lots of time, the reason is smoking & alcohol. Excess amount of smoking & alcohol leads to decrease in sperm count, causes infertility. More on infections, Cancer, Tumor and also imbalanced hormones also causes the infertility. The accident & injuries, where sperm duct hit also the main cause of infertility in men.
As I have read lots of time, the reason is smoking & alcohol. Excess amount of smoking & alcohol leads to decrease in sperm count, causes infertility. More on infections, Cancer, Tumor and also imbalanced hormones also causes the infertility. The accident & injuries, where sperm duct hit also the main cause of infertility in men.
Doctors have had a difficult time identifying the main cause of crohn's disease. The three main factors that doctors have identified as the causes of crohns disease are environmental factors, genetics, and immune system problems.
its actually unknown what causes colitis, there are still studies on it. it may be a result of abnormal response from the body's immune system. genetics may play a role. i personally think genetics is the main factor, they dont know what caused my crohn's, but my grandmother had it, so it makes sense.
Genetics is the main cause of a receding hairline in men. Your mother or father can have the gene that causes hair loss. Dihydrotesosterone, which is a substance derivative of androgen, is what is passed on from generation to generation.
physiology and genetics
Aggressivenes of the Athenian empire which interfered in inter-city disputes outside the empire.
One of the main branches of biostatistics is medical biostatistics, which covers health and medicine. Another branch is population genetics or statistical genetics.
Some causes of diabetes is genetics (it runs in the family) and environmental factors (like viral infections). The symptoms are nausea and vomiting, fatigue, unexplained weight loss and excessive thirst, urination & eating.
What are the three main causes of corrosion?
Zoology Botany Biology Genetics
intelligence, Genetics, and Geography