孕妇多晒太阳可保证胎儿的骨骼正常发育，但由于怀孕而对日光中能使人晒黑的UVA更为敏感，遭遇阳光后，会比其他人产生更多的色素沉着，如原有的色素痣(俗称痦子)开始扩大，面部雀斑也会加重，甚至有些色素痣还可能变成黑色素瘤。所以，在多吃含Vc比较高的果蔬同时，孕妇最好使用成分是物理防晒的防晒霜，因为它的化学成分少，很天然的，不含铅，对胎儿没有影响，化学防晒霜或美白霜最好不要用，因为有的里面含有铅、铬等元素。
孕期多吃这些有助胎儿的骨骼发育
海带和虾皮是高钙海产品。海带与肉类同煮或是煮熟后凉拌，都是不错的美食，每天吃上25g，就可以补钙3mg。虾皮中含钙量更高，25g虾皮就含有5mg的钙。而用虾皮做汤或做馅都是日常补钙的不错选择。
大豆是高蛋白食物，含钙量也很高。5g豆浆含钙12mg，15g豆腐干含钙就高达5mg，但豆腐中的钙吸收率远低于奶制品，可以作为奶之外的补充。
蔬菜中也有许多高钙的品种。雪里蕻1g含钙23mg;小白菜、油菜、茴香、芫荽、芹菜等每1g钙含量也在15mg左右。但蔬菜中大多含有草酸、植酸，其中的钙元素的吸收率较低。
坚果中含丰富的、对人体有利的不饱和脂肪酸，钙的含量也很高，可满足补钙需要。
专家认为，补钙还要提早一步，最理想的补钙时机，应该从准备怀孕时开始。然而在孕期的不同阶段，有哪些补钙要点，孕妈咪又该如何合理饮食，健康、快乐地度过孕期每一天呢?快来看看专家给孕妈咪的补钙建议吧!
虾皮等各种海产品一直以来都被认为是补钙的佳品，而孕妇补钙自然也可以多吃这些食品，它们会对胎儿的骨骼发育带来很好的帮助。此外，豆制品也是营养丰富的孕期食品，一些蔬菜和坚果之中也含有丰富的钙质，最适合孕妇食用了。
孕期多吃鱼对胎儿大脑发育有益
Three-year-oldswhosemothersatemorefishwhilepregnantwiththemscorebetteronseveraltestsofcognitivefunctionthantheirpeerswhosemothersavoidedseafood,anewstudyshows.
However,theresearchersalsofoundthattheamountofmercuryinawoman'sbodyrosewiththeamountoffishshehadconsumed--andthatchildrenexposedtomoremercuryperformedworseonthesetests.Basedonthefindings,theysay,it'spossiblefishcouldhaveevengreaterbrainbenefitsforbabiesifmothers-to-beconsumedseafoodwithlowermercurylevels.
"Recommendationsforfishconsumptionduringpregnancyshouldtakeintoaccountthenutritionalbenefitsoffishaswellasthepotentialharmsfrommercuryexposure,"Dr.EmilyOkenofHarvardMedicalSchoolinBostonandhercolleagueswriteintheMay15issueoftheAmericanJournalofEpidemiology.
Advisoriesonmercurycontaminationofcertaintypesoflarge,long-livedfish--includingtunaandswordfish--haveraisedconcernsaboutseafoodconsumptionduringpregnancy,Okenandherteamnote.Ontheotherhand,fisharealsothechiefdietarysourceofomega-3fattyacids,substanceskeytoearlybraindevelopment,theyadd.
Tobetterunderstandtherisksandbenefitsoffishconsumption,Okenandherteamsurveyed341mothersabouttheirintakeoffishduringthesecondtrimesterofpregnancy,andthenhadtheirchildrencompleteabatteryoftestsofcognitivefunctionat3yearsofage.
Onaverage,womenreportedeating1.5servingsoffisheachweekwhiletheywerepregnant.Theamountofmercurythewomenhadintheirredbloodcellswasdirectlyrelatedtotheamountoffishtheyate.Children'stestscoresrosewiththeamountoffishtheirmothershadconsumed,butthosewhosemothershadmoremercuryintheirbodiesperformedlesswellonthetests.
Accountingfortheeffectsofmercuryexposurestrengthenedtheeffectoffishintake,andviceversa,theresearchersfound.Benefitswerestrongestforchildrenwhosemothersatemorethantwoservingsaweek.
"Ourfindingthatthebenefitoffishintakeisstrengthenedwithadjustmentformercurylevelssuggeststhatifmercurycontaminationwerenotpresent,thecognitivebenefitsoffishwouldbegreater,"Okenandherteamexplain."Maternalconsumptionoffishlowerinmercuryandreducedenvironmentalmercurycontaminationwouldallowforstrongerbenefitsoffishintake."
SOURCE:AmericanJournalofEpidemiology,May15,2008.
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