http://www.timesonline.co.uk/tol/life_and_style/health/article7054842.ece
Pregnant women are often assumed to be “eating for two”, but a high-calorie diet may also be influencing the sex and health of their child, researchers say. A study in pregnant mice found that diets which were high in fat or carbohydrates had an effect on almost 2,000 genes in the developing offspring, including those involved in kidney function and smell. The most striking variations were found in those of the female foetuses, suggesting that girls may be more susceptible than boys to genetic changes triggered by their mother’s diet. Sons and daughters are also at different risk for conditions such as obesity or diabetes later in life, apparently related to either the mother’s diet or body condition while pregnant.