Yes, something i didn't know whan i was 18. It's not easy to know what to eat when you're young, and to pick up bad habits. Then when overeating destroyed your hormonal balance (insulin, ghrelin are appetite regulating hormones that which imbalance can make a tiny bit of hunger massive and painfull), it's extremely hard to adopt "normal" eating habits without a lot of stability in your life.

Right and people don't stop and think that a 16oz glass of orange juice is like 6 oranges worth. An orange is fine. 6 at a time is ridiculous.