In a 12-week study, men were asked to eat a handful of walnuts (about 2 oz.) daily. At the end of the study, their sperm was found to be healthier than volunteers whose diet did not include walnuts. The semen of those men who consumed walnuts showed a greater concentration of sperm, greater percentage live sperm, better sperm motility, and fewer sperm that were misshapen or had chromosomal abnormalities.
Researchers believe the polyunsaturated fats in walnuts are the effective component. Walnuts are high in linoleic acid and omega-3 fatty acids.
A diet rich in walnuts may possibly shrink or slow the growth of prostate cancer, an effect also credited to the nuts' fatty acids and antioxidants.
If you need some help in the ED department, try some pistachios. A study found that a daily serving of the green nuts (3.5 oz.) for 3 weeks improved the erectile function for men with ED - as well as improving their lipid profile, reducing bad cholesterol levels and raising good cholesterol levels. Researchers say that pistachios are rich in arginine, an amino acid that maintains flexibility in blood vessels, and can boost nitric oxide levels.
So,next time you're packing your lunch, don't forget to grab your nuts.