title: Nutrition. 1. A vital power supply.
mesh_terms: D004040:Dietary Carbohydrates / Q000378:metabolism; D004041:Dietary Fats / Q000378:metabolism; D004044:Dietary Proteins / Q000378:metabolism; D006801:Humans; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements
chemical_list: D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins