The acetyl CoA that is produced from the oxidation of fatty acids enters the citric acid cycle but does not lead to a net gain of oxaloacetate is the main reason for body's inability to convert fat to carbohydrates.
Explanation:
The food we consume essentially consists of three types of nutrients:
Fats , Carbohydrates , Proteins
Fats are required for body as they are essential fatty acids. By the food we eat different types of fats are produced which in turn produces various vitamins which are required by the body. These vitamins are only soluble in these fats.
Carbohydrates are one of the nutrients found in food. Most foods contain mixing of three nutrients. Carbohydrates are found majorly in the form of sugar, starch and fiber by many food industries.
The acetyl CoA that is produced from the oxidation of fatty acids enters the citric acid cycle but does not lead to a net gain of oxaloacetate is the main reason for body's inability to convert fat to carbohydrates.