Supermarkets full of rubbish?

Do you feel that a lot of what you find in the supermarket is rubbish? So much food these days is processed with colors, preservatives, MSG, etc. then irradiated and who knows what else. How can you feed your kids blue juice, cookies for breakfast as their cereal, and nitrate laden bologne? And then we may ask, how does this all correlate to hyperactivity, ADHD, obesity, diabetes and cancer etc.