The more mom works, the heavier the child: study

A study by researchers at American University, Cornell University, and the University of Chicago all found that the more a mother works for the duration of their child's life, the more their child's BMI (body mass index) rose. Studies are taken from 900 elementary school children from 10 different cities in the United States. The findings were strongest with 5th and 6th graders. researchers suggested that the reasoning for these results are because parents have less time to buy groceries and worry about nutritional food.

I believe to an extent that this study is true. I do not believe that is all the parents fault for their children's BMI rising. You also have to account the desire of the child to be healthy. Most children in grade 5 and 6 start hit their growth spurt and their bodies need more food and at the end of the day it is they're choice in what they put into their bodies, not their mothers fault.