Men who are struggling to have a child can improve their sperm by eating a few nuts daily, according to a new study in animals. The researchers found that walnuts reduce lipid peroxidation, a chemical process which causes damage to the outer shell (cell membrane) of sperm which is mainly composed of polyunsaturated fatty acids. walnuts are rich in polyunsaturated fatty acids, so they are suitable to replenish those lost through peroxidation, as said by the researchers.
Actually, they contain 13 grams of polyunsaturated fatty acids (a total of 18 grams of fat) per 28.5 grams of food. Earlier study had shown that men who ate 75 grams of walnuts a day showed improvement in mobility, morphology and energy of the sperm, but until now it was not known the potential mechanism by which it could be done.
In the new study, published in the journal Heliyon, scientists from the University of Delaware, USA, granted for 9-11 weeks in two groups of mice either a diet enriched with walnuts or a conventional diet. Scientists, with the main researcher Dr Patricia Martin-DeLeon, Professor of Genetics and Developmental Biology at the University, discovered significant improvements in motility and morphology of spermatozoa in many animals hired 20% of their daily calories from walnuts. This percentage of people corresponds to 75 grams.
Even infertile mice showed improvement in morphology of the sperm, and in both groups of animals a significant decrease of cell damage due to peroxidation. The morphology and sperm motility are important indicators of sperm quality and male fertility. Although the new research was conducted on mice, the researchers believe that their findings apply to humans, since the fertility correlation with the nuts on groups of men had been seen.