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一、胆固醇是人体的必需物 胆固醇是一种脂类化合物,在化学上它实际上是一种环状分子的一元醇。它不溶于水。胆固醇在体内有很重要的功用。它是细胞膜的重要组成部分;在脑、神经组织、肝、肾和表皮组织中含量特别丰富,约占脑中物质的17%;它是制造胆酸的材料,胆酸可以帮助食品中甘油三酸酯与胆固醇的消化;它可以合成肾上腺皮质激素或在性腺中合成女性激素及男性激素;在紫外线光照射下,7—脱氢胆固醇可转化成维生素D_3,以促进钙的吸收。因此胆固醇是人体中不可缺少的重要成分。正常人体的血液中胆固醇的含量在120—200毫克/100毫升。但是,胆固醇含量过高会导致心脑血管
First, cholesterol is a human body needs cholesterol is a lipid compound, chemically it is actually a circular molecule of monohydric alcohol. It is insoluble in water. Cholesterol has an important function in the body. It is an important part of the cell membrane; in the brain, nerve tissue, liver, kidney and epidermal tissue content is particularly rich, accounting for about 17% of the brain substance; it is the manufacture of cholic acid material, bile acid can help food triglyceride Acid esters and cholesterol digestion; it can synthesize adrenocorticotropic hormone or gonadal synthesis of female hormones and male hormones; under UV light irradiation, 7-dehydrocholesterol can be converted into vitamin D_3 to promote calcium absorption. Therefore, cholesterol is an indispensable component of the human body. Normal human blood cholesterol levels of 120-200 mg / 100 ml. However, high cholesterol levels can lead to cardiovascular and cerebrovascular diseases