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The test consisted of measuring conventional sperm parameters and molecular changes over a 14-week period.
Young men who ate nuts had "significant" improvements in their sperm, vitality, movement, and shape. improvements found in other recent studies with diets rich in omega-3, antioxidants and folate
Nuts are dense foods containing many nutrients and other phytochemicals.
Researchers say their findings "support Dr. Albert Salas-Huetos, of Rovira i Virgili University in Spain, said the study was conducted in a context of general decline the quantity and quality of human spermatozoa .]
The decline was attributed in industrialized countries to "pollution, smoking, and trends towards a Western-style diet." [19659002] A major analysis published last year found "a significant decline n sperm count between 1973 and 2011."
The analysis, which included more than 40,000 men whose samples of sperm were analyzed, showed that the results were "attributable to a drop of 50 to 60% in America, Europe, Australia and New Zealand."
The new study was a 14-week clinical trial in which 119 game Healthy men aged 18 to 35 were assigned to their usual western diet supplemented with 60 grams a day of mixed almonds, hazelnuts and nuts, or their usual nut-free diet.
Researchers recorded not only sperm parameters but also changes in several molecular factors, including fragmentation of sperm DNA
enumeration, vitality rates , movement and sperm morphology in men in the 60 g / day nut diet than in those following their usual nut-free diets.
The improvements in the first group were about 16% sperm count, four for sperm vitality, six percent in sperm movement, and one percent in morphology.
Dr. Salas-Huetos said the four parameters are all associated with male fertility. in the group of nuts also showed a "significant reduction" in their levels of fragmentation of sperm DNA, a parameter closely associated with male infertility.
He said that it was the change in the level of fragmentation of DNA in sperm. The researchers explained, at least in part, the improvement in sperm count, motility, and morphology.
Dr. Salas-Huetos pointed out that the subjects were healthy and apparently fertile men following a western diet, so the results can not be applied to the general population.
But he was reluctant to say whether men hoping to conceive a baby – naturally or with IVF – should add nuts to their daily regimen.
Dr. Salas-Huetos added: "We can not, however, according to the results of this study, we can say that:
" But the evidence accumulates in the literature that healthy lifestyle changes, such as following a healthy diet, could help with conception. "
The results of this study, funded by the International Council of Nut and Products Based Foods dried food, were presented at the annual meeting of the European Society for Human Reproduction and Embryology (ESHRE) in Barcelona 19659021]
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