A new study from the States has found that men who ate 2.5 ounces of walnuts a day showed an improvement in their sperm vitality, motility and morphology. It seems that walnuts are a very good source of polyunsaturated fatty acids which are known to be important for sperm production, and are also a good natural plant source of omega 3 - which may explain the results.
The researchers only looked at healthy young men, who were under the age of 35 and who didn't have existing fertility problems, so it cannot be said with certainty that the results would be the same in older men who were trying unsuccessfully to start a family - but having said that, if you don't have a nut allergy and don't mind eating walnuts, there's certainly nothing to be lost and potentially everything to be gained - the team set the level of walnuts to be eaten very precisely in order to ensure maximum benefit without the risk of putting on weight!
There has been much debate in recent years about how our lifestyles might be affecting our fertility and whether a Western diet could have a negative impact - and this new research provides food for thought... You can read more here
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