Dietary shifts refer to changes in an individual's or a population's food consumption patterns over time. These can be due to various factors such as cultural, economic, social, and environmental influences. Dietary shifts may involve switching from one type of diet to another, or altering the composition of one's current diet by increasing or decreasing certain types of foods. Such changes in eating habits can have significant impact on health outcomes, as different diets provide varying levels of nutrients and other important compounds.