Experts have said people should cut down on unhealthy food and avoid alcohol, tobacco, processed food and additives as much as possible. Nat Hawes, author of Nature Cures, said: The foods consumed and toxins ingested can have an effect on eggs and sperm for up to 90 days ahead, which is why it is important to consume foods that only have a beneficial effects and remove toxins three months ahead of the time for a planned conception.
Organically grown food and grass fed animals contain no chemical pesticides, antibiotics and hormones which can adversely affect human fertility.
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The nutritionist recommended people looking to get pregnant could avoid soya beans, high gluten grains such as wheat and even some low fat products.
She also recommended people should reduce their intake of sugar, which means many processed foods and soft drink should be eliminated from the diet.
NHS Choices said: You will increase your chances of getting pregnant if both you and your partner are in good health.
A bad diet, being overweight or obese, smoking, drinking and unhealthy working conditions can affect the quality of sperm and stop you getting pregnant.
You should both try to make your lifestyle as healthy as possible before you try to conceive.