Daily zinc supplementation to prevent oligozoospermia. The following foods are supplemented in daily life: eel, loach, squid, hairtail, eel, sea cucumber, cuttlefish and snail, followed by yam, ginkgo, frozen tofu and tofu skin. Because these foods contain high lysine, which is an essential component of sperm formation. Zinc deficiency in the body can also reduce sexual desire and sperm. When eating these foods, be careful not to drink too much so as not to affect the absorption of zinc.