Can you tell me what number of american families are living off of a fast food diet?

Why do you ask?: What I can tell you is this. People love to criticize other people's food choices. When we control for obesity and lack of exercise, alcohol and smoking, most supposed benefits of "healthy eating" and especially vegetarianism disappear. Fast food outlets offer low salt low fat options that you may prefer. Government guidance on diet largely political and keeps changing. Stay fit and eat sensibly