WhatIfYouStoppedGoing149 million six hundred thousandkilometersaway,sunlightisbeingejectedfromtheSunshootingacrossthesolarsystemthroughouratmosphereandifthetimingisright,landingdirectlyonyourskin.Feelsgood,doesn'tit?Andit'sthissunlightthatbeginsanamazingchainreactionwhichhelpstosustainyourlife.Thesunshinevitamin-vitaminDthatis.Interestingly,someofthecholesterolyouconsumeisalteredandstoredinyourskin.

地球距離1億4960萬千?，光穿過系，穿越??層，若是時(shí)機(jī)剛?分美妙，難道不是嗎?正是光以延續(xù)。陽光維其實(shí)指的就是維他命D。有趣的是，?們消耗的部分膽固數(shù)字英?讀法讀法?例：oneonehundredandtwenty-three從左到右逗號分別讀為fourhundredandfifty-sixtrillion萬 billion?sevenhundredandeighty-ninemillion百 thousandonehundredandtwenty-chainreactionchain本意指的是“鏈?”—引申出“supplychain供應(yīng)鏈；achainsmoker煙?；achainstore連鎖商店；productionchain?產(chǎn)鏈；以及我們最熟悉的foodchain?物鏈cholesterol[k?’lest?r?l]膽固醇chole膽汁+sterol固WhatWhatisCholesterolisawaxy,fat-likesubstancethat'sfoundinallthecellsinyourbody.Yourbodyneedssomecholesteroltomakehormones,vitaminD,andsubstancesthathelpyoudigestfoods.Healthproblemscausedbyhighcholesterol：angina[?n’d?a?n?]?絞痛/heartattack?臟病發(fā)作/carotidarterydisease[k?’r?t?d]頸動(dòng)脈疾病/stroke中風(fēng)/peripheralarterialdisease[p?’r?f(?)r(?)l]外周動(dòng)脈疾病Andwhenthatwell-traveledultravioletBsunlighthitsyourskinitmodifiedthischolesterol.Thenewmoleculetravelsthroughthebloodstreamtotheliverwhereit’salteredagainandthentothekidneywhereit’sbiologicallyactivated.ThisactivatedvitaminDworkstoabsorbcalciumfromyourfood,ultimayleadingtobonegrowthandstrength.

中的膽固醇發(fā)?轉(zhuǎn)化。形成的新分?通過?液進(jìn)?肝臟，進(jìn)?步轉(zhuǎn)化后進(jìn)?腎臟，在那?，分?的?物活性得到激活。這些被激活的維他命D能夠幫助機(jī)體從?物中吸收鈣光譜波長分布UltravioletUltravioletB（UVB紫外線）對?體具有紅斑作?，能促進(jìn)體內(nèi)礦物質(zhì)?素D的形 eyecataracts[‘k?t?r?kts]?內(nèi)障,anddamagetotheenvironment.?體常量元素碳?xì)溻}鉀potassium氧磷phosphorus鎂magnesium鈉硫sulfur氯chlorine?體必需微量元素鉬鉬鐵碘iodine鋅zinc?體主要AnywayyourskinneedstheSunandtheSungrowsyourbones.Perhapswearen'tsodifferentfromnts.WithoutvitaminDyourbodywouldnotonlysufferdecreasedmineralizationofyourbonesleadingtodiseaseslikeosteoporosisbutalsoseeadecreaseinimmunefunction.Furthermorethere'sevidencetosuggestthatvitaminDhelpspreventcancer,heartdiseaseanddepression,whichmayexinwhythoseincolderclimateswithlessdaylightoftenexperiencethewinterblues.

?論如何，?膚需要，幫助?骼?長。或許我們和植物并沒有那么不同。沒有維D，你的?體不僅會?骼礦物質(zhì)減少，造成?質(zhì)疏松癥等疾病，還會導(dǎo)致免疫功能下降。此外，有表明，維D可以預(yù)防，?臟病和抑郁癥，這或以解釋為什么?照時(shí)間較短，?候寒冷地區(qū)的?們