This is an important article that discusses how important a healthy and proper diet is during pregnancy;
"Women who eat badly during pregnancy may be harming their babies’ brains.
Scientists have done new studies on baboons, which have a number of genetic similarities to humans. They tested the difference between pregnant baboons who were fed a moderate diet, and those who were allowed to eat what they wanted.
They found that when the mothers-to-be ate badly it had a damaging impact on their babies’ brain health. Neurons and gene connections were broken. This means there is a “critical time window” at the start of pregnancy when eating badly can really have a bad impact on the health of babies..."
http://www.weightworld.co.uk/health-and-diet-news/poor-diets-during-pregnancy-affect-babys-brains-2106.html
Source: weightworld.co.uk