Grazing on nuts may boost men’s fertility – according to doctors who found that a daily snack of almonds – hazelnuts and walnuts increased the number and quality of the sperm men produced.
Fertility specialists in Spain examined the sperm of 119 healthy young men before and after a 14-week study during which half were randomly assigned to have 60g of mixed nuts added to their diet each day.
At the end of the study those who had received daily nut snacks had on average 16% higher sperm counts than those who went without – with more modest improvements seen in the proportion of living sperm – their shape and their swimming prowess.
The findings add to a growing body of evidence that diet has an impact on sperm and male fertility more generally.
Other recent studies have linked improvements in sperm quality to diets rich in polyunsaturated fats such as omega-3 – antioxidants including vitamins C and E – selenium and zinc and folate – all of which are abundant in nuts.