Question: how do you know if you have too much sugar?
Answer: Premature ageing. Excessive sugar consumption can cause long-term damage to skin proteins, collagen and elastin, leading to premature wrinkles and ageing. ... 
Constant cravings. ... 
Low energy. ... 
Unexplained bloating. ... 
Weakened immune system. ... 
Insomnia. ... 
Weight gain.