2. Poor diet (malnutrition) can also contribute to male infertility, including deficiency in vitamin C and zinc in your diet, you may want to consider supplementing with volume pills to increase your fertility. Some diseases (e.g., tuberculosis, fevers, anemia, and mumps in adulthood) and infections are also suspect.. These Some diseases (e.g., tuberculosis, fevers, anemia, and mumps in adulthood) and infections are also suspect. These are infections of the reproductive system such as epididymitis, orchitis, and prostatitis. Some sexually transmitted disease such as chlamydia or gonorrhea also damages the spermatic ducts. You also risk transmitting your disease to your partner causing her to be infertile.
3. Some medications are also believed to be causes of male infertility. This include cancer-treating agents (e.g., chemotheraphy), anti-fungal medication (ketoconazole), antidiarrheal drug (sulfasalazine), Azulfidine (a drug used to treat ulcerative colitis), and some groups of antibiotics (nitrofurans and macrolides). Likewise, the use of anabolic steroids is also known to cause testicular shrinkage and infertility.
4. Other threats to male fertility also include testosterone deficiency, trauma or injury to the testes, structural abnormality or blockage in the vas deferens, and varicocele, a varicose vein in the testicle that produces too much heat which harms and potentially kills sperm.
Some are also connected to your lifestyle, like excessive stress, overly intense exercise (may lower your sperm count by producing higher levels of adrenal steroid hormones, which lower the amount of testosterone in the body), tight underwear or jogging pants, hot tubs, saunas, or anything that raises the temperature of your scrotum, including overheated vehicles and hot work environments, and exposure to environmental hazards such as pesticides, lead, paint, mercury, benzene, boron, radiation (x-ray), radioactive substances, and heavy metals.