Australian scientists have made the world-first discovery that a pregnant woman’s diet determines whether her baby grows into a fat adult or a skinny one.

It reveals that a mother’s diet during pregnancy affects the baby’s brain circuits, determining appetite and energy expenditure in their offspring.

“This suggests that mothers should think twice about overindulging, or using the excuse that they’re eating for two during pregnancy,” University of NSW professor Margaret Morris said.

Pre-natal period programs a child’s future appetite

Unlike previous studies, the groundbreaking work highlights the pre-natal period as a critical time for “programming of post-natal and adult appetite”.

It found that even before a woman falls pregnant, she is potentially “programming” a child’s future appetite.

“The major finding is the dramatic increase in body fat in offspring of overweight and obese mothers,” Professor Morris said.

Mothers fed a high-fat diet had offspring that were heavier, with more body fat and altered appetite regulators in the brain, meaning they overate, she said.

The results are supported by a study published in the British Journal of Nutrition last year. It found that mothers who eat junk food during pregnancy may produce children who crave the same foods. (…)

Pregnant women should not ‘eat for two’

She said that although nutritional needs were high during pregnancy, women should not be “eating for two”.

Professor Morris studied mothers who were already overweight before they fell pregnant. The experiment results also found their offspring were showing signs of developing diabetes at a young age.

The findings are particularly relevant for overweight mothers, highlighting the importance of maintaining a normal weight before and during pregnancy. (…)

Source: NEWS.com.au, Australia
http://www.news.com.au/story/0,23599,23113819-2,00.html