Question: how do you know if you're eating too much sugar?
Answer: You crave sugar — a lot. Believe it or not, it's actually possible to be addicted to sugar. ... 
You need more sugar to satisfy yourself. ... 
You've gained weight. ... 
You experience mood swings pretty often. ... 
Your skin keeps breaking out. ... 
You've got a few (or more) cavities. ... 
You run out of energy pretty often.