Nutrition and metabolism.
D000818:Animals; D004435:Eating; D002149:Energy Intake; D006801:Humans; D008660:Metabolism / Q000502:physiology*; D009748:Nutrition Disorders / Q000503:physiopathology; D009747:Nutritional Physiological Phenomena / Q000502:physiology*; D009765:Obesity / Q000503:physiopathology