fasting

Biology & Medicine

Metabolism & Diabetes

• Fasting MetabolismFasting metabolism is a continuous shift in proportions, not a clock that suddenly switches from glucose to fat at hour 12.
• GluconeogenesisGluconeogenesis literally means making new glucose. It keeps glucose available when dietary carbohydrate and liver glycogen are insufficient.
• KetonesKetone bodies are a way for the liver to package energy derived from fat into watersoluble molecules that can circulate to tissues especially the brain when carbohydrate availability and insulin signaling are low.