Joyce Hesselberth illustrates a well-balanced, healthy childhood for the NY Times Science section today. New research suggests that interventions aimed at school-aged children may be, if not too little, too late.

More and more evidence points to pivotal events very early in life — during the toddler years, infancy and even before birth, in the womb — that can set young children on an obesity trajectory that is hard to alter by the time they’re in kindergarten.