fatvegan

A mother's weight during her pregnancy may have a lasting impact on her child's health. British researchers found that women who had a relatively high percentage of body fat tended to have fatter babies, and other studies have linked an overly high birth weight to an increased risk of obesity later in life. Doctors advise mothers to be to exercise regularly and to maintain a healthy weight through a balanced diet before and during pregnancy.

Obesity During Pregnancy Has Lasting Effect on Babies

Presumably it's also important to maintain a healthy weight after pregnancy.

I should add that I'm inclined to think that this is bollocks. I can't think of a way you could work out if this was actually true without force-feeding mothers. Newspapers are so crap.