It is well-documented that maternal food habits and essential nutrient intakes have an important impact on reproductive outcomes.[1, 2] However, there is less information available on the importance of nutrition for paternal reproductive fitness. Evidence is particularly limited for men who habitually

Consume a Western-style unhealthy diet which is lacking in many essential nutrients and omega-3 fatty acids, which are needed for healthy sperm and fertility.[3-13] Omega-3 fatty acids are especially important for proper sperm morphology and function.[5, 6, 8, 9]

 

Raw unprocessed walnuts are a rich source of essential nutrients and provide an array of health promoting phytochemicals, including carotenoids, phenolic acids, phytosterols and polyphenolic compounds such as flavonoids, proanthocyanidins (PAC) and stilbenes.[14-18] Therefore, a study specifically investigated if in young men (age 21-35 yr old) habitually eating unhealthy, adding 75 g of whole-shelled walnuts per day would have an impact on semen quality...[19]