Various causes involved in male infertility have been discussed, mainly including congenital factors (e.g., genetic abnormalities, congenital bilateral absence of the vas deferens, and cryptorchidism), acquired factors (e.g., varicocele, testicular torsion, and genital inflammation), and idiopathic risk factors (e.g., smoking, obesity, and aging) (9)
NRTs are proven safe and effective to help you quit smoking by delivering measured amounts of nicotine without the toxic chemicals found in cigarette smoke
Symptoms and Causes What causes oral cancer
Archived from the original on October 27, 2011
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