What is the energy yield of alcohol?

The energy yield of alcohol is 7 kcal/g, which reflects the amount of energy released when alcohol is metabolized in the body. Alcohol, specifically ethanol, provides this level of energy mainly because of its unique molecular structure and the metabolic pathways that process it.

When alcohol is consumed, it is converted in the liver through a series of enzymatic reactions, yielding energy in a similar manner to carbohydrates and fats, though at a different rate and with distinct effects on the body. The body treats alcohol as a fuel source, but it does not store it like fats and carbohydrates, leading to different physiological responses and implications for nutrition and health.

Understanding that alcohol yields 7 kcal/g helps to contextualize its impact on diet and energy balance since it can contribute significantly to overall caloric intake, especially in beverages where alcohol is mixed with sugars and other sources of calories. This knowledge is essential for making informed dietary choices, especially in the context of weight management and overall health.