Specific dynamic action is maximum in
a. Specific Dynamic action (SDA) or calorigenic action of food: - defined as “ production over and above the actual heat thought to be produced outside from a given amount of food, when this food is metabolized inside the body; eg.
i. Protein — has SDA → 30% above its caloric value (highest)
b. Carbohydrate has SDA → 5 to 6%
c. Fats has SDA →3 4%
d. Ordinarily the SDA of all together amount to about 6% of the BMR