Vegetarians and vegans may be harming their chance of having children after a study found that men who do not eat meat have significantly reduced sperm counts.

Although a diet that is rich in fruit and vegetables can protect against many illnesses and can prolong life, it appears that it may also harm fertility.

Researchers at Loma Linda University Medical School, in southern California, embarked on a four-year project to find out how diets affect sperm.

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