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PREVENTABLE CAUSES OF INFERTILITY
• Gross obesity.
• Smoking, drinking and hard drugs all reduce sperm counts.
• Stress can inhibit ovulation in a woman and sperm formation in a man.
• Ovulation problems are the most common cause of infertility in women. Usually the cause is unknown but the post-Pill syndrome has been mentioned above.
• Endometriosis is a common cause of female infertility. Some of the lining tissue of the womb finds its way into the pelvic cavity and embeds there to produce pain and bleeding every month with a period.
• Varicocele is the name given to a vein that supplies a testis (usually the left one) when that vein is varicose. About 30 per cent of male infertility is thought to be caused by this.
• Zinc deficiency. Zinc is known to be necessary for many parts of the male genital system and is found in greater concentration in the male prostate gland than in any other part of the body. Zinc deficiency definitely reduces sperm quality.
• Low sperm volume is an uncommon cause of male infertility.
• Some women become allergic to their partner’s sperms and so never conceive.
• Certain drug allergies cause a temporary shutdown of sperm production if the drug is taken.
• Really poor nutrition undoubtedly reduces sperm production. Vitamins À, Â and Ñ have been found to be vital in human sperm formation and function and vitamin E is vital in rats at least.
• Drugs can affect fertility in two ways. First, they may affect a man’s sex drive so that he wants to have sex only very infrequently (alcohol, sleeping tablets, tranquillizers, anti-depressants and some anti-blood-pressure drugs are examples). Second, several drugs actually affect sperm production. (Examples of these are sex hormones, anti-malarial drugs, certain anti-cancer drugs and Depo Provera.)
• Impatience. Some couples are not really infertile but expect to conceive almost immediately and worry when they do not.
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