Can endometriosis result from menstrual blood flowing backward through the fallopian tubes into the pelvic cavity?

Varicoceles, an enlargement of the veins within the scrotum surrounding the testicles, are a common cause of male infertility.  

Cannabis use appears to negatively impact both male and female fertility, though the evidence is stronger for effects on sperm parameters than for female fecundability. Background In 1996, California marked a turning point in U.S. drug policy by becoming the first state to legalize medical cannabis through the passage of Proposition 215. In the decades that followed, cannabis laws expanded and shifted nationwide, leading to a steady rise in cannabis use for both medical and nonmedical...