Pregnant women with expatriate international medical insurance may wish to avoid consuming processed foods.
Louise Whyte, founder of Penelope Fitstar and personal trainer specialising in pregnancy and post natal exercise, said these females ought to eat natural products that are nutritious and healthy.
"Wholegrain bread, pasta and rice are ideal" as they give people energy through slow-release carbohydrates, she stated.
The specialist also recommended olive oil, nuts and avocado, as these can provide "good fats", although crisps, chocolates, biscuits and cakes contain saturates and therefore excessive consumption of these items ought to be avoided.
Ms Whyte also promoted eating "plenty of fresh fruit and vegetables".
A study published in Heart revealed mothers can risk damaging their offspring's cardiac health if they are overweight and smoke during pregnancy.
The exact way in which this occurs was not clear, but it is thought disturbed levels of plasma concentration could be a factor in this issue.
Around eight babies in every 1,000 have a congenital heart abnormality.
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