Antioxidants, found mainly in fruits and vegetables, may improve sperm concentration and mobility, say researchers from the University of Murcia in the journal Fertility and Sterility.
In this new study, 61 men including 30 with reproductive problems and 31 who did not have fertility issues tracked their diet while researchers noted their seminal quality.
When compared to the men with fertility issues, men with good semen quality ate more vegetables and fruit - foods with more vitamins, folate, and fibre - and less protein and fat.
An earlier study has shown that men who eat large amounts of meat and full-fat dairy products have lower seminal quality than those who eat more fruit, vegetables and reduced-fat dairy products.
It's thought that a diet that's high in antioxidants from vegetables and fruits can lower the level of oxidative stress that may affect semen quality, sperm concentration and mobility.
"A healthy diet is not only a good way of avoiding illness but could also have an impact on improving seminal quality," concludes the author of this current study.
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