Most infertility problems in men have a solution. Vitamin supplements help to improve seminal quality, favoring natural pregnancy. Some of these supplements are melatonin, coenzyme Q10, zinc, selenium, L-carnitine, DHA and vitamin C.
In addition, diet also influences sperm quality. It is advisable to avoid acidifying foods, because they accumulate many free radicals and favor toxicity in the spermatozoa, damaging their metabolism and DNA. Some of the foods to avoid are: red meat, coffee, seafood, cow's milk and derivatives, cheeses, industrial fruit juices, etc.
On the other hand, if the man lives in an area with high pollution, it may not be easily solved, but if he suffers from stress, yes. Reducing stress, taking probiotics to maintain the intestinal microbiome and working on deep breathing techniques is the best antioxidant method for semen.
In more complex and/or severe cases, in vitro fertilization treatment may be necessary to get the sperm to penetrate the egg. Nowadays we have an advanced sperm selection based on the detection of chromosomal alterations in apparently normal spermatozoa. This is the Annexin Columns or MACS technique. This complementary technique greatly improves the pregnancy rate in those cases in which we know that the proportion of chromosomal abnormalities in apparently normal sperm is high, increasing the proportion of healthy embryos.