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What factors affect male fertility?
There are a range of environmental and genetic factors that can affect male infertility says Dr Suks Minhas, of London Andrology.
Transcript
So, there's a number of factors that affect male infertility, including dietary problems, hormonal problems, history of surgeries as a child such as undescended testes, varicoceles or varicose veins of the testes. Some patients might have had chemotherapy or radiotherapy as a child, which can affect their subsequent fertility, as well. In many instances, it can be genetic causes, as well, genetic problems where there can be chromosomal problems, like Klinefelter syndrome, which can cause these type of problems. And, of course, other diseases like testes tumours or previous history of testicular cancer, having had chemotherapy and radiotherapy, or other types of tumour. For patients that have had chemotherapy, this could also affect fertility.

