The most common cause of male infertility is a varicocele. This is when the veins in the scrotum (the skin "sack" that hangs beneath the penis) are dilated on 1 or both sides. This heats the inside of the scrotum and may affect sperm production. A blockage in a man's reproductive system may cause male infertility. Some medicines can also cause infertility.
The following are peer reviewed papers authored by Dr. Fisch. Click on the link to see the paper. You must have Adobe Reader on your computer to read these papers.
 

Endocrine Disrupters

Declining Sperm Counts in the US-A Critical Review

Geographic Variations in Sperm Counts

Global Temperature Change and Fertility

Incidence and Surgical Repair Rates of Hypospadias

Sperm Count Distributions (MacLeod Revisited)

Maternal Age as a Risk Factor for Hypospadias

Paternal Age and Down Syndrome

Rising Risk of Testicular Cancer in the US

Semen Analyses - No Decline in Quality

Sperm Counts and Birth Rates

Worldwide Variations in Sperm Counts

Vasectomy Reversal, Vasectomy reversal NY, varicocele, male infertility, varicocele surgery