Metabolic Pathways of Fat and Sugar

Depending on the availability of food and metabolic demand, fat and sugar are converted into each other by a series of enzymatic reactions. Thus, a person can gain weight by eating excess carbohydrate and sugar which become converted to fat.

A diagram showing two-way interactions between glucose or sugar and glucose-6-phosphate, glucose-6-phosphate and glycogen, glucose-6-phosphate and glyceraldehyde-3-phosphate, glyceraldehyde-3-phosphate and glycerol, and fatty acid and acetyl-coenzyme A. Glyceraldehyde-3-phosphate also interacts with acetyl-coenzyme A, which interacts with the citric acid cycle. Glycerol and fatty acid interact with triglyceride or fat, and triglyceride or fat also interacts with glycerol and fatty acid.
Triglyceride (fat) converted to and from Glucose (sugar)