During childhood, under-nutrition causes children to have less energy and less interest for learning, which negatively influences cognitive development and academic performance. ... Evidence suggests that the timing of nutritional deficiencies can also significantly affect growth and development.
poor nutrition and no physical activity can lead to depression and even death if eating bad foods for years, treat your body right, your children and husband/wife wont have a life, they will have to do everything for you. You wont be happy.