I observed that food intake is that the actual food intake is the amount of food that you actually consume. A person consuming a larger portion size of a food then his actual food intake is said to be greater than the recommended serving.
Direct observation of dietary intake is often undertaken as a means of validating a dietary assessment method by providing an objective measure of dietary intake. Eating behaviours including items and amounts of foods consumed, received or given away, or spilled can all be noted [1]. However it is not a feasible method for obtaining habitual diet data at either a group or an individual level.
