Too much sugar/carbohydrates, even if raw, is toxic. It poses two issues: glycemic imbalance leading to energy crashes, and accumulation of AGEs (Advanced Glycation End-Products), that cause 1/3 of diseases.

The body only has around 4g of sugar circulating in the blood at a time. Eating more than a few carbohydrates drops blood-fat level and raises blood-sugar, making the pancreas overwork to secrete insulin. This creates a sugar spike followed by an energy crash — leaving us mentally and emotionally fatigued, irritable, sleepy, or depressed.

AGEs are a corrosive glycotoxin. Columbia University found they store in a healthy body at 70%, and in an unhealthy body at 90%. AGE accumulates and eventually melts tissues, creating sagging skin and muscles, and predisposes to cancer and many other diseases.

Some foods that contain sugar can be beneficial for the other nutrients they contain — other rules address how to manage sugar intake properly.