CAUSES
[1] VARICOCELE
[2] CONTAMINATION [EPIDIDYMITIS/ORCHITIS/HIV/GONORRHEA]
[3] RETROGRADE EJACULATION
[4] WORKSHOP PREPARATIONS B,OOD PRESSURE
[5] ANTIBODIES THAT ATTACK THE SEED
[6] CANCER
[7] CRYPTORCHIDISM
[8] HORMONAL IMBALANCES [HYPOTHALAMUS/PITUITARY/BULLOCKS]
[9] TUBE PROBLEMS CARRYING SEED[INJURIES/INFECTION/CYSTIC FIBROSIS/OBSTRUCTION IN THE EPIDIDYMITIS/VAS DEFERENS/COMDUCTORS EJACULATION/URETHRA]
[10] SYNDROMES;KLINEFELTER/KALLMANN/KARTAGENER]
[11] CELIAC