Mom's influence may trump kid's own habits.
An observational study of nearly 25,000 children whose mothers adhered to five healthy lifestyle factors were found to have a 75% lower risk for obesity when compared to children of mothers who did not adhere to any of these habits. The beneficial lifestyle comprised a healthy diet, regular exercise, BMI less than 25, no smoking, low alcohol intake. Even when the kid's own lifestyle habits were poor, if their mother's led a low risk lifestyle they had a lower risk for obesity!
PositiveTip: Mother's, never forget that, as an early health reformer wrote, your "influence is an unceasing influence." (Adventist Home, p. 240)