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人在生命活动中,总离不开饮食营养。但,基于人的体质有所差异,鉴于人的生活习惯不同,因而,所谓的营养物质,对不同的人,则有着不同的作用和意义了。人体所需要的营养素是多方面的。而人的生长发育和衰老消亡的历程,亦正是生命元素摄入、平衡、失调、缺少之过程。人的生命基础,由蛋白质构成。而生命之能源、热能、要素等,则由碳水化合物、脂肪、维生素等组成。虽然,形成人体生命元素中,碳、氢、氧、氮四大元素,约占人
People in life activities, always inseparable from diet nutrition. However, based on differences in human physique, given the different habits of people, so-called nutrients, for different people, have different roles and significance. The nutrients your body needs are manifold. The course of human growth and development and the demise of aging are just the process of intake, balance, disorder and lack of life elements. The basis of human life, made of protein. The energy of life, heat, elements, etc., from carbohydrates, fat, vitamins and other components. Although, the formation of human life elements, carbon, hydrogen, oxygen, nitrogen four major elements, accounting for about