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Prevenire le malformazioni grazie all'acido folico

Gli apporti di ferro, iodio, calcio, vitamina B9 e vitamina D devono essere decisamente più alti all’inizio della gravidanza e, in alcuni casi, sin da quando la donna decide di avere un figlio. È il momento di prendere buone abitudini per portare avanti la gravidanza in tutta serenità! Ogni anno, circa 1 neonato su 1000-2500 è vittima di un difetto di chiusura del tubo neurale. Per prevenire questa malformazione, la vitamina B9 è indispensabile durante i primi mesi di gravidanza, ma anche nei mesi che precedono il concepimento.

Acido folico e malformazioni
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L’importanza dell'acido folico

La vitamina B9 (chiamata anche acido folico o folato) è utile a diversi livelli: contribuisce al processo di comunicazione tra i neuroni, quindi a preservarne la memoria, alla sintesi delle proteine, del DNA, e partecipa alla crescita e alla divisione delle cellule sanguigne e nervose. Aiuta inoltre la futura mamma a rinforzare il sistema immunitario, a resistere meglio alla stanchezza e a conservare la memoria. Ma, soprattutto, sin dall’inizio della gravidanza, è fondamentale perché la vitamina B9 contribuisce alla chiusura del tubo neurale, che in seguito diventa il cervello e poi la colonna vertebrale, quindi tutto il sistema nervoso! Questa chiusura ha luogo tra il 22° e il 28° giorno dopo il concepimento.

Rischio di grave carenza

Gli apporti di acido folico raccomandati negli adulti sono di 300 microgrammi al giorno. Nelle donne incinte, passano a circa 400 microgrammi al giorno. In caso di carenza (riguarda il 50% delle donne), il rischio di malformazione del cervello o del sistema nervoso (chiamato spina bifida) aumenta nettamente. In pratica, le cellule della placca neurale, che hanno il compito di ripiegarsi su se stesse, non si chiudono, oppure si chiudono male lasciando un’apertura nella colonna vertebrale o nel cervello del bambino. Ecco perché è assolutamente necessario che la futura mamma assuma una sufficiente quantità di acido folico durante i primi 3 mesi, anzi sin da quando pianifica una gravidanza (almeno un mese prima del concepimento)!

A partire dal desiderio di un figlio

Per diminuire i rischi, è importante consumare sufficienti quantità di acido folico anche prima del concepimento del bambino. Lo sviluppo critico dell’embrione si ha prima dell’ottava settimana dopo il concepimento. Ma la donna non sempre scopre così presto di aspettare un figlio. E, secondo vari studi, solo una percentuale tra l’1% e il 5% delle giovani donne in età fertile avrebbe un sufficiente apporto di acido folico…  E solo il 3% delle donne assume acido folico prima della gravidanza. Ora, l’assunzione di folati 28 giorni prima del concepimento e fino a 12 settimane di gestazione riduce sensibilmente il rischio di malformazioni del tubo neurale.

Il preconcepimento, un periodo cruciale per la salute del nascituro

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RZf01ZoZZIRgsKXua95/lgE3kFWiS9VeEss0GWODlhLMnxonBLf5iUD65nXgyJ0C3L4y04JkMTT2Xu+nwYgGHyKCrdy3SwKo+uzpwgOZlDIhjlibuggeWvsm/s+3Tn7gEI+HYeD+cMrRCixQ4tuGRnvzvz7RwKsTMvnK0AC92cBhBHdpGOl0ro3N74/VQc4DqGzF0GvVxDTYZxdJKT10hO5sEgg0I8nGfvbcEReFk4zMFRfHAVuiUk8uNt/GBOVcXYqgAk9jLwcgjM3eugV+IWGirtrRb9F1C4GIXV4JqgJSnl+UlAgaRqte9msTOHxtnYT9zFzjRMfYWZXnTZIbYduImOQWJ21KFFH0ruFe514bnueFsGohWiRd25DEY3xlTDKMJsBQVTkit6Roda2aHLwrAmKWpQHQ2IjkzdTVbT0F9S90MHqBEyayoGmjokmPlEEnvc0UHcom6wozmrJqYjr90a3ySI+GfCYQ4GYpUfxhAetPZuZRccaUjzcchXQlIiSbV7CSi0qqHYQmtt7o+4B7vvBWa6CBs48E+hYTBEE0l1j0ZDkTDMQV9AgJO7pKCMHo2Rhu0cZYsau0OxUVCSS36ReqXJL5uqC/lZw8znB8JTjTtoiFqaR9b19h4APiItHKo3b9C+bj5vOlgFTvHk8UVkV+XRVeVdBYNi0/sx4W75+5f5aD2zstAtp24ChthahOPs/MQPvDwYpfFw7tt5aS1iqwrc0nez2M0gdOhmwajwT6P0aBH8IEaD2Um46F2FbpZ6ZdZfQSDpz5PRAgwTK8rcZWlvC2cbW4uZk856WTZcJe4i/mBZWNtXvf3XwPuEyRUgmAweZ7EzN42sDS77P0m9OWHwGirolQd+QOVtoRG6ZfHwElD5YEPsBCl5jTstVTQqF4PrxJ5TfjQZxgACL6sG1xDw3WwyjDVUNCp8N5NSxuMyduYMdWato1EBhay/yoarFvvEXkZ2dXEaNrKGxPQkJiLFxSiEQjScz44rAcOmDuwqtTcUOyQn88ApGNrgNK/ev/662yA7ATsAGlRZOqQq1LtOH8RAY1SRMM0qbYsbShcppTVxDaNGBCEhbvH5Icyh6H6Puz1uG0kaR8qgVITNddiZ4QZpzSUzKWeLQxSJ+wxOmzBQG1Af6EpwuiNjajTaEKeMiAC6lBamJKKhcBC2UmZ7k+tK7GX6cE2pwEGRaTV4GYxyMNAYlBa1NEMk6BRRDQ3NkQZcw4GwSVtN64OPM6FQV1JTwvyT7r7TrFUlKXw+BL8mf9T3cZkBKA8YnIRuzPOFICKeoETbH2YE0RAet8edhoqd8uJxCPnrPIpD+eLX6aUG7KYAou0IuYdv0OYYowan+5bnN+r+Xu37BEKrjMcVGiT9JdGOAi8nHuZkGMfDOS3N1FtGXsVQE5JFfCU6VCOvSPtXEir8YBGclpBowRNrUx2/QIPl0fXMi1vs0sGi6G9a7JcPXpSDLTTKwSYelkqZYmLycJH2VlToWI5fJP9sDQX/JKuOr1/19l+nzqsAblKnZ6PZ/OhF5FWJvSycbTQoz0/8tLfavv8TivUuvABAYW3ywQYtMndZ9S452sgrCmu7PHoRnKaRV4AjfbjOj7f58bayLsN+NXPSFnVubzbv/fTZaJrYy3hcYofMWub2Bg2CXrmyX2iodLDyhxk4KudyZmUSIhzmi/6LwtrSuTJzUggk7iLwcg4W28vCuwIVQhSPvWXaW9HhHFuL2Jlv3vtpbC0q7+pr4mW0VDHcm2Y+yk20phqCyXHk/YKGUPqwzUCjexUHI0czszLqLjB3nkNChP3KH2YAoGACDa0JTiU817izw5s8kIdE5x0EGEkMSPr3tkXNOUUwHIBm3S49kEBpv7YgzjNNhT+UL4yvEYA2upvUCbvHjhyBccocgVM8+xcTKgtwMBofQW0YYDQj0rCUqCqCPfaoBWhiEQQUOAQaCdGgNg6o467ScbLHbU01H2FApy/HTZSiyq5UKsCZaMGBGiBRli4XNv60MZ7IVIop4WUduCENmDM7jUyaLCEhtJaL45fpYGHoE4AAp1EBhH3RebDDzQFVoFtEI2pJ3YC8IY26NVIRXXsy5dJvq+8DwmEReZWUMrc3Re9yj7vIrgKngMATb3LZ+30K9cNhkR1tDNgskfTny4cvKVgO3Tx01jM7p8M/HqwlENiL1FveUXGwBZcsdkw8Vf3O8/MTX4Ates+z/kopIdDu+V0xXs2c9Aa/gkbSXybuQlMnk7V+1Zv/pr7vQNmjCB93iEalP8wSez7zUmgItNjD/yidWPF0FBGGczEyZK7wB/mZ5wtwqYUJeI+uANXyBgyRV81Ok6BXBqc5RUnE+D9/FITDAjsAKnCK2JlD4YcfPU0HK6lZ6s2nbgKNJx+enbs+vb3saPN0PF0+fHluhQS3XXhRaV9qiNLe5r01ahNTxE45P74mVofWOvKqeDiPrcXXrzlKbWSnrdQl7u1hsQrFD3xyyuYEJFOSa+qGZlwKAyAJpN5yaif0sgcR4MX7LylJp9c3RYAuU6PfZ8iPRAMSBFTtiRRGXpUITwQ5taohp0wFh0O2hQNcpbqEV+EOXxALkoYuaCg0NG6QBqWDsnuG1vBJ5X37jQl8WuxxR/eZyvTBKD//0AfXJrUW2pgJ3iCgcQeGHTTYIQiVxt81qLXu9N3vTBh1p27Nbzw406/in1J812DfYE+xnwlguYnT6dsODnSHG8Ll6QYSNocGqCHBjTKzAGOscq7SoyXly+IwcVuYRUIPZYdbAsT3uMPeeFJyC4QzSi0Md5ITyVSYwLwDbb/G//xD29fNKjrvh6V7ycGS0eLyg59xzufu9ar/KVqcf+gX1jbtrXJvs/qvfpyMFofoN/Kqor+hu+C7WeJkoZUv+p+E4yIYRuDq2el53r+kgkYLDo30ePN0PBMQz8bh4uFzDZFZy+LBFiSPoTB1k8xd0ypMnVV0Ul7YUXV8PRunr3r/39T31bg71A3vB8iZUSyiI9AoQCkhKeGSXICD8Cy0nSwHIFSrIWhBt6g1RIM7SgToYITEov8iHazM9iBPQT8rSJpDA8AeaGCoag0kRNvNSDE1R8MQhNaaYUfNrDt8Lsn5NfeEg5Y3xPIFYCoJr7CWlIVaaNYVJSHv0b3afM+emsOU8RSath3r6qQdb87M0kPTfIl1nIwWoVtS0tuipuISHZyf42+hgc9htjc3VTGzT2iKHu7u4bxD5qWJj3dPqqd6a8NqunvpYBV4eWiV4MAevptFJ2XqLc/Gvn+SmWR8D9/OY2sRDgsAEIisReKsqDLzdDgJH2WBUxTOmqFGg9zezHvP08GqGlwTfZca1aKTMhzm5yc+bqAhzodBYV+C4cIOSA7r2WgaeHk5upw8SM8fBVTNAMN0lJT25cSKqYmo7u6MAJeyq8z8Ov80OV6m3pJC48kwjq2Ff5KF/Sp25gL8Bp+hgX+Sxc58ehITRLEcvJz3nlNgSLqcweMs/DCnVqUnjy/CYRE8zuZ7phFEAAAgAElEQVQfPM/tldkyNaajZGLFB3LyzEsjr1JCz04TcGCH80dBNbj2h1ng5ZSvNNhhj3SwuhiFzx5NqcGO6dYcCof+1DdkX1fnrZwr384lhO9m+YMtBMJ+5fdzigvi3qKwttGoPDv1p24CGF2wp8OpP0x0V2LP7U08ypYPt2m/pJMjtqr5YGUKSQK6QTJaRF4FiXBYZP01FPxHaejmGuIz/A2AwCmS/pIwFyV0PtgUw+3MSb/m2Pimvs9QHL5ERTZHokSNXYvGSK0ISJItkFyDuJ3cdJIpg6Tgy7xWaTyUKY2hxS2E4tTFCd4x6bqSt5bdKwiA5u+ImrKzPQ1I1ubVKAJSQhNqduiBMaVwDoaWmpGpYishBJO6a9R71X2QEPgVzn539vR0Eoxycnaz0+T8JJhZWXayenJyYRz1DlM7Kd3VuesLCAER2UVkF1qiBV/YL86cIHbmib2EAPZY9j4JnMJ3s+TBKhjlkBCKo8H0cRw788mjiDjA01Hy7KMpOOLTipgf51bou1ng5dXD5/5JRtAKBJ6Op6V76Q8zytMpuDD3gZn8kfLcp6eT+QfPZ6fJ+vjTJ6MJOPLBJj/eTu1k/fDHWX9NsSEBApm7jo8WPzq9AEfqrrP+mmLPef8qdPPKuQwGGThSZxG65RNvknrL2KoIvQVDNCoSe570lwv7RejmGnj+3h/EvercjbPTdTwswZEMV2X/qnr/etF/MR0laIAG5ydBZq2no2RuPZ9YMaimDBMuAYCCak2vJzr+aWiV6+NP/+3pEzBUg+v04frZaLbqf7r+4CcE3gWPs5mVFb3L+dGL2WmioXw3y97bUsyb9JeRV03thMQgnp1MVvaL8sF1OliUDy8njyIAuEH2aJn0l3PredG7PDv1obF68GnWXwejPBqVtGdDt/T7+fbh72/e+6lBDxkCp6gG19GoTJ3Vk5OL+3yZvc6wjm/Xvk6zvtvqgnQTKV5oO1yP1tYB+e7C3RrodqikEENqYrYrMPA97oi3RJI6Ei25JQWOTrvpXitTd6/cmtgeCsQyN+nGq4+N16jzHnIQ89kl0I2po3jwEOlQEZC6xO7RqG4mLbrBBVQnVZDapDktefwW9ZkXJtaanj/FTAqSSwYzlMs0LQkwhtpwDpSpbBreGdF6v1RcO9TPKP66w53xwhIMba325FLNj7/COBhBHFM3yQeb85MANWJnTsNb8vcv/ZOMvO0PT56V/avlw+3m/RdPfvcZGPL+IhzF9IHS3mryKMqsdTDKscP5h75v57m9oeONesUg4Q+zxfHL2FpEdkWauMGg2L7/+09PJ2G/Ct1SQZ4/CgIvTwerqwd/8MydCfAa+8iuCmubHW0Mx7MxCe99bkihNxTuMBlHs3EKifLoKhjlSqlktIjsimoXMycFwzPbz70NaepEXlUMroip+3Q4nTyKioeX8+NrQGX9VTwsFWTqLEjIEgqJPQ+HBVqcnwSVc0X358KLUmfBtYoGeXSaEuZzMZwd1kw4LGbjlE6yaFTS+5EQFP3hrsM0DQPMSHUw3ZIameGfaiT28vxRgAaFtT079Ql/nJ7EEJh5adm/okQhGOXFw0t6xMV44/fz1FkRo2D58GU+2EiIeDgPBgWtSt9NSY9gOkouvIhWfm5viDAQeDmVd7L+OhqV9IkkxMxLabiFAJ+Mo8ReEoCwePCCHro8NMire82xN2LfqpbB22Sv09fxzgBwhEfV7MOkRZO56+r96wa7fLBJh4VQMhqms9ECElMri4ZzqKZFQ8p0YNjhJu2tqCE/tFIlMbevQjuCRj5Ylr0CUFohO17GowgSob3JrSs60jJrHtgVFCInjpwYCoFdZdbccKQ1ZsPQH0WUWSd2GTgFxdGBl5PTND0t3UFFhxmBg76dn59OscNsnK7e/zGAiROmwwJaQWk6TVNnFbo5JMARO2XVW6NFjdt4WObvX0Ze7nuxRpv115m7hsCFF1TeVaNrKPhOEQ4LSCQn88V7LyChwP1hNhnGXKOyX2ZHl9CY2snaebnHLVpk1nJ6EoJDSr7HjW+nhbOGAlpMT+LJOKLiDz0RDdWacTwtBHGzeWJtVsfPBfhkGFfH1w12i/6L9OGaYv8GDBp+b566l1q1AM7dZexmAkqDR9YiGC7iYUEggO+m4ShULcJRunz/GgJCan+YTL1lA4ReFTiZgNZAbGeJk2mo8nhrFBwG2fLhSwEGhbi3iLzKxEMMF6MwdEtymuuHP544MYEYh7TDxLNvyN75vnf269YgHlczK4PEsvfJbJxKiMiust7cIIYtoHTiJDN7Tr4m6JWFs6WMM3icZf31ZBiHp76G8HtRdBppwLfK1FkQRhc42eTEBzA5zXxrCUAJnbrbxForpVJvmXpLpVRirVN3Szs/Op7n3gYcHI0ED7ycAhYozKwsH60NutTxPAyjECBcbHaapINVMMpnXhYOlg3acFhk7lLohiIRSEyceN57njqLZFRV1uXMyqCxxw4tCvuycLZaQkFmvW1mraEwfRxtf+en8biKvCp9uM76a0h8fPLs0vrJZBjH43Lz3o/LwVagidxFNCoEmH9a+r2ywR1qJEfryn4e9hbTk1QwHQ3n1fsvwnE5PYnT3ip1VoYNjo55CgUOMMpDFDgmo3z5/suid7k6+iSz1nvsLo9+Rp1IINJOi2RUVQ+fByfVhR3Mj14ues9BnTYC+fFVcbSEgpLIvCI52oLj4/H5uvdiOszjcbn8nU1lXRJhYP3BT4rhOuxXzx/8u8K+BEcyqp46U6nFZBxk1pqEzuJxRUo20ahEjacfTlZHn8TjKhgU+WAz/SimtEMTf+itrXV81+2d73s9a9FEozLw8vzBtnzvirr3YmtRDT5RmnUDjnl0GgWDF5FXXHhR6V7G1sKc5y1SZxUOCyrGVMeG2Bic5vPjy8kwnfXXm951aqWocTbOl/0XwTCKrPXMWSX2UoHH9ia2Nwo8sZczZ9WAAWLb+zTtb4NhFVopWgT9xer9Hwdefm6Fa/vTmZWha+wlcskBFDOuDTi31tF4k/ZWV9ZLtCJ1FiHR9ADZzcA9G/upt5xY8dnYj05TCCN9Go8Wfj+X4KhxfhIYgk6L9OE66S/zwcb4YgUIXHiR72ZJf14eXUVeAYb4OE5GFVrEvaKyn0MhHJfRh+l0EBWDZTquIIEbZF6ZePlkHKXOKhktqFMTMHy9PfWcMXBoAa21rKV88s8n01GS9Jck9he6ZfA4I7lfhv9Cb/LpcOqP1uGwiKxVMFwQw4TpNhpvLqyUoeYtzk79wF4QVDIdRZNBmg6qpb2JvByo8TnCYRGM42CYTPvzJ48SKER2kXpLNAhGedm/QoPfe/xxbC18NwsfFZN+QifTZBg/s/1ivDk/Cf714x/SA7qnPcs3MQOws3e+7539mlH05Pfz6b+IqsE1CeRNnPjcS6EUWikZgBo7nD1e5Q8XhbWNBnPCgAiFJFIk10oCUX8ZnZRaA3eIrDQbVvFwHnrVxWlIYO7UKgIvj8dV4C5p0hhp5YMjcReBu0SLsw8nfj+d2Xk5vJ66ERWISAQ4dVbRYH72eIZDLx06TRRpOm2pvYFg0IvTOB2sDCwI3GHH0ArFDxQQ2ShTpN5p0xhr+DdCSk7IKWrscHeHW5BeERdESrzDzR435HqJ88jBNFiLVtVCo22NeP5eSRBXmrDsHfYNOBQE1dMb4M6Ee1QS5Zwz1HTHpCHetAKmBTh0y2pw3aJWprRTw1BrpIDQHWsHApBME0avOf2swk6DbpTa4Ys9Pu/ePwS0INwYgEbLGwNNH3oNGRriIbYgSQgqgjHR0qFCHHIJgbqTmD40+XY9c2/Q3vm+d/ZrJrUgwWetdWiV/klmRtzWaPUXd6gbQKhboBYCaE2hhsKrRtc0g0JrDS1Z1wp9kFaVACSkamgPC2las0VHiNnjFlJCyj1u6fdqCCIMgkGBU3s9uKbaq6n56q7OKwyjj1hp6Bq2Um+ZO0Xi5KV9GRwvpILpqpX3Ta8HLg7FTdBoaJxzixb4HDu0ZgAA6ehQ5WF/kI066J3IrtMLLTS0Alc1QGULAY09dQ1S3U6QILPSYJBKg1PPGcWttdoDBxoAreFGCamhUMtwMC8Gy8ApquPreDivcUcMKlOp4wC40mBKSnCp6b0TXGjKQfQfmin5a+9fQkG3mkNBdI2AEmCKBgxzmlAOgRbNvaJE1+JGbHB6tVY198RJdE2HyhxL3xft0rfM3vm+1zSBrL9Ox8sLL0rsJXXCQQFSAXyPZk/bQ7E72QjsDJcY94IUuvOHrb7VUByywY7+QJ1oRt8J4LLBrpMtk92PKQ7F0bWASbREAlVgDW4btHs0kLjF51Tmpi43E8p1soZG9aRzu7Ezz+wyHhZnjy7QglFkxKCZSZBbRYrDRrcKHJAc4Ao7aAEIJRsoDrTUBUJNEYpDgFPLPmXWRO0kV8XBSOZP0WheuQcgBRO4ocRzj8ZEWBwtuFS/Vn6/V6hV1PwrtITEHZhWmkGqyK7CUewPs2cnM+xg5DJpgUswqAbQGkpohQaG93MDrTgagRpacNm0uJP6DlASNApLEVvA8A3U3pwNbdc+rACplGYSggTfDCFBCGgoRT5dSm3uP7nFw/xP+kTUj/wu7vuHsne+7zVNIfKqtLeKrcXcvcZhCq2mea1QLcz2V9CKmaQMDJT6kLUgKQJI8EZDK8Z3gOoETW6VEi1UixaaC7nTgJadPJmQELQTuZad7hHxxhvKye8MYCS7mIi210EXr+vNAkerGmJlaVZDo2kYUzQ3F0oJhjvdtcQJcPPTSgIULpldT8npzsgISqHaVjF1L0NL2R4XzEjgyL35pFCoVQ2jW8q7+XkteCd9SrJ6VLxQ4LIxlM+OnHRYsAx7AIzvYCRF94oDmt+7yK7pwqg/4OZX+ILhFhoSN5rhlz/7P7WWFLrdaU6xba0NKGD8mIZW0I00KSqJNTStguaQDEJqoSSHPkyk/LUWY929EyLAGY5OJ4rFGDOO701XeMne+b539uumYMZg64NHq6HQYqcMh4tLfAZ8BkGbxdTsDrf2oB0Axlu9o64EDXGr9tDQ0gwnURpKkaJw24E/imbIEigGcjocLe4ARRwLNDBf71rW6H/oOuSloV9yw7SgzjkDYBkVT0rWGgjWEexBczo6BQGQkp4CaoBBMQ6toDkUcVBJ6AUckkNoCIGmwR15askNN57pRpPzlEq3HIfksVFE+yRXbSaRGzo6p2yXg1GZxXiKw/A/AQGpOj1aw+npJpMckL4WNb6gb78BR4P/Cw3OnP8MTl2bdQOJRhN+ALbTQIM7KXfkzSVaAUHBmVBfSHBOXb0aNRcC0BDUqms6dpXSBFqgU+VTZnYN3UooHHp7QY15h8beN2fvfN/barKBhlQHgUKjQc7BNLjZsVpAGXhJ46svrtVXXgL6n9RFY+mNLI0gsTKl8bkGgJY30OJWAxy8UTffoWXySlPaMNk1KJ0Njv/8jY7HeOvsne97W00b1ruCVGAae6nMqEklocAFZKuI8cAFOKT+6kvh3QUFpmg2nNyLRgBMcMmpk/EOqoYWEqKWrVaUhe7e8NP/7e2d7/tN9s73vaUm5U5rKAXKFaQWkgO4JWqxwq2EqNWeQzDCobX8yovGMry7CIQ3aWMLDb7HFzsAAo1SLSBFA91ogEOoN0k7+5bsne/7TfbO9729ppTQGnXbcLUj2F1ycLBOMO0wOYg0o7764tDvLg4NLaXkHEKQop9gNKEIqKlbmnV1EiUMDvbdtne+7zfZO9/3lprW0GAaSui9Ri04lCCeAsNePR3+6az3n4KHfxYf/S/TwR+d9f807v/5u+trron75zPvTya9vzo/+sXTwb8/H//ljx79IWpI1UIDaJn6FSBkuweUGbr4nbZ3vu832Tvf99Ya19hrLQEhOLQAZAOOsP9Xk+GfodGt2LVAgy8gAd1Cy6+8XpUL/1O7wBUaQDeGYy132OPfjP/4v338S60YJNBKaLRomW7wRvVFvh175/t+k73zfW+rKa1kqziAVpHjw9/+q+EfMjCFO8E0tADugAaoaXzHV1+vwP5f4Sq/vxfAheJMQ4O1tdLgGi3+Vkj8N9a/e+r972B3rdbcqEV9953fO9/3m+yd73tbTSpwALeSA5qB418N/5BmMhjurpZaKnScUppv+3cvvOLSYP+kLqa0AJdoG/65Rs1YQ0w01Wq0+x+5/x47pYFboFUAb3/T43nr7Z3v+032vfV95/1fSGCHL9ACNaQAoBQHzd55+y+ShP0MUggBLfAZ/+HjPyYGLhQm/SQ7WSXHy8rbCiGgqDeeOhLAIaCVFPekXxrdQE2XkisOtsNetGjwBfU8tGaqAvWuKdJkp6NiT130Cprdj2KgLrQGO4Y7446hWrRSAWJ/h71qcEPtbhy6+XyHhpiIXDKGGlJpLiRp/XNoGrHYQishACitdA0NevEGprNqjxutNYFxHJyUTqRm8qBq1wCCQek77JQSSok77KA0BIME9jDS2V/q/QK43ikFfdH7U0AJ2Uhgp/gbXwC/5bVHA72XLThI7LcNBj8H++7XcL49+976vqT/S6Vu9milVo3QLQDcQYhXcYDftgsCQnzOqIVB4Kn7c9GABHtb1KmzWr736YUXhVY+/SiEgEALBs50g1Z3fbVKmkE/Znhu12AEATPiWlHLP7XUmxk9pqddo8GexoxILcjD0puTEGbUjrwfzYFOrBtmrIe4078ishyjCV7gHDuQnugOkPAfR4ldSrQcdYumxi0gOPWISbSSCq4tCYEYSRWNrjmBlL85oEg0gQ4GM52H/oXTfQQNPwPu5UNoQC2AWtVQYMDM+oWWAOeq1V/DFf+uXBIKe2gBBi5xy8DOj35huvbeGYDvse+bPvgzKKFBzTm7vWYN/kYAAvI7caGhaVhM4m+gMfvgL7ouWWigsLZF7xoABGKnjK2KfB80Wi332KGhXd82uqb+IaZbDkaDPqSUjGYSCWgoIbU2kRz/ArcaoKFrO9yQ2r7R7VCocdewGpzaS0gqoEWLW3ymgR1+JSDMVCLVGDV/hR04E1xrQHItaUKNQgu/nyZuBaXJhWlykZpRh6sgxTptPggUWuykZjVuG+w4BCNtKcGgNEDKBdzIRGkWO3ns5NBMgGkJUpSifrvDtGwNBTRoIaWOrF9CCuhWS6X1d2advOqSANROoVEairXY4dz5xXcfxfw27Xvr+56c/EUjscMNJJhuOqUR9a0drP/QFyPhXsmwV9Dp+C8axTQYB5dQF6N4ZmUAwBB5VeJWEtSyr4RQQEsdo61p+ehQPg4JQQNqpTLTCwEFCaWZAIc0kw/J00nJIYA9BBpGSgXa1ElMtywhZqjpNdANUWlwBykh0WoJye/ntzG1x46BMW2cKZdMQmBP4gJKwqCZDQS0UBqaRtPWCgpadoqkDLe4oZ+iMNa858P8WIF8sMkHGwhICEHN8xo0/OigF6CE5tCyZS1ufOfnpp6uwWXz5hfAb3cpCQ7GcSv2EMB5708ksH8LFATeHvve+j6/97+hEVBQsm0pJ7uT4G+6tervfTGGGjfU761ZPX3wl2YQq4KCvPCieDgnDbt0sAoGBTQSZ3v1X/8EDJmdFfZl/GCuBbhkEMjtTf5gW/QuJ/2k81kce/zrHzydDuLS/hQSLZgCA0PslJv+p34/JZ+SeZuZl7WoY2tRHV8blSeGGvtglBe9S/+kIHVSet3Uqc5PgniwnnyUgHNoVZ7kYT+bDEN/PE+O1qjNAMlzN6wG17hDeDpP+nM0CAfL4njuf5RH/c2iv0qsTTd9SIEjdVbFw8vMXeb2hlzY0w8nMy/lYL6bZe4aGhJt6FVJbxO5i8hdJL1N6FUS7Q43aBBbi8Lazj5MaCYvFCAEGKD57Pjn0ICWgsji3/FLCXAwIRsIsBsZfPDfAwqsfqOb8u2y763vw1373334P6FmwI5hxzUALnHzxpur/t49WEqpfSsgGwGBH9l/1tasBmiUpv+DNDvaFP1NNbj+eHgBKGgejovC2kxG+ZkX5v3r6MOUQoDoeJ64i9halO5l4i58O9/jDhLTUZTa28RdFL0X565P+F06LGYn4bk9ndtXk3EChuRoGzrLmZeGbplZaxpGo7VeD348s7L8+CroV5PHKQVkRX9TWJvQLVNvnn/wYnYSQCI4Chb9T/PBOrc3qbd86kyhIdCS9jI0wsEydubPRrPZaRI7edivLrzkyfCssC+XvU/u8DkUysH2YhQW1iYdz6d2HDgZWnzsTuPRIno4T08XRe/yzJuCqdCZp9bzxFon1jq1nofOnLz6xWkYjUq/n6eD1cVHAQWYDJACDTBz/6OUpolaavXGF8BvvX6EaA2++W/GP4fkdSPeVTq+bN9f38c0OH5o/Xw2+PlZ7y8S98/z4//54sH/Ghz/+XfiSh7+LHz/j0P7P5/1/+Bj76ex/R+N6KYGGGaDInFWMy/1H6VGyEiqeFhM7IxGoy6PXkysCBCBUyTuIhqVLRqtdWlfTh5FYIitRTJapB8sSU80cAooRNYi7S2J2Vval9FgLiH8YZ656+XgpYQoepfRYA7AP8my/np6EjMI7OF7c2ik/XVpry/cHALQzLdXFx+mEIgfJedOAQmFXdKf5/ZKgnPebo9+QmMuAneeDhbpeI49Qmc+f3BNjikYJDQDKOkvo0E5fRxDaQ2VDhbFcN2qeualmbPNj6/QIB9sysEWpmVNRKMyGpVCCJr7TjqsBHEan6sgScaKAaKd/7P/49z7WXj8l9GDX6bHf/zGF8BveYUf/Ie090fB8f/4sfM/hP3/hKaFBhOvnEn/T9C+t76Pg7gUNNVvr2QLLqChvyMXAGgoZQC488GfgoN4Ki3qsn+V2xsoGgpsdNMyax4PVkCNFrGbJcMNBBJ3ceFFuIE/zLL+OvBy3EGAJ84qcTZQkFoZhEwgcJepfSUBBh7by3ywhkTlbJJ+Sdp4hbOlYYyRVy0/+ASAVtC4oa7i8HGS9UotUTrzfLBZ9J5rAaVZQFmqBrRc9J5PTnwqxSb23HczDeVbZTG44mihkfavErdQstEamVfOxrFAW/Quc3uFFvPhtX9cZMMVqZlO3bTsvxRQCjIZVXGvgobWEhKJXSZ2CQkSTy6cbWiVVE7JB5vIriREjTuOWyjOcTuz/4SyYCWh8eYXwG951dhLEDGUgUFD/Iqq5O+ss++t7/vOm4JCoyUNsxLTwS+ZkpBagIOj7F+VR1dQ2OHGgPwShX0ZepUBfDRaNNCInXnWT6Nhmjir2WnWacSr6Sjzx3NyExAI7AoS/jAJvQQQ4HLdv5zYAQRmTrLurUi60nezyTAGMBun8/deQIMi0dTeMC6j4Xxm50lvk7pr3ymgzKCayM7K4y357qK/8d0UgIBIHmzy0RpcV9Y2HawkhABPB6vMWtMo+sxaZ9ZaoM56z2fOOnE28WAdeitAkPBvbC3K0eUNftWing7SwtnS1HooRNYqslZQxD3k/jCZjCOqk2TuOnRLdBM7WsWg22e9n0NBKcXRvuGh2e/sH8Xe+b631RQauZfgaNAodnH8V8AdtAnRIq9K3AW6oVxUxAyc4nwYoRt3T4S4dBSl1svsaJMclZlXxqfV750GaDFzZ8v3ryt7nXrL6SAOTiq0uBhm2dFmOlpMHq0mdgEJoRE4m6x3RZTg3N5EdgWFp6eTq+M/uBiF4Yfpv3We0DzZ0Mpn43T58GVsLTYPXyZu9fGjCQQSZ5P11/G4zK151l/5j1Jy0HP3OnAKCMRWlVlLAukza/nlP/tuBo5175NwlIZWXjjr6nee59b2/FEAgdAqkwcrKGCPq/7PZlZmaIAKhuOiAAUBXtrb9Qc/mdtXwWl+Ng6xh4SCgpAaaCExHfwRwDlxBvU7ZOz7b+9839tqmjhukrU7aPgPftGqWoFT/PV7Jx8/ezSVXNGcH6KqnY39s9+d0SAY6uUgrrFuZDq6qgbX8QfL2FtDCgaGGplXRsflbBjGowVaKAkwLOwiHVS+U+EWAp8DIj7Jp96MZjPOnNQ/ySjXvujF0UmZHFfZ8P9r71x2qziCMPwEkaJwsYETh5AsomzCOxAM+IIN2JggLxJ22WYTDIQNXhEpPGF2rCKhmHPm0t11+bKongNCQWxQ4sv8msXo2O45Gml+V9dU1bdDpuMAxF23z+/entxbO79zbXGDhGh/99zurXP31i5ur1+4v7K0EQBGjOXJzRuXbmIsf30jgN8YEevNz9cmm4LRAt3VpdU7i/e3zm9f/3Izim9uLf2wMdkRiiLLk7WNpbtRauOu1y6uXbu45j7wMFpufnFn88zO95+vYLTM+kCtA/Q9081Tz1EELThjXuwEaPS+QyoTz+ZqZBp61j953DMLR4iNL9FyapWMVSi00ECQEgL/oFhww6wyColGN6Wn1g4riQ5hlkmJKRnTWiPWM41Gj7qPFkiQKZpjn00H5iQKydVwEg1CT6MIhiCJsnX6wbAZdxIZETqHwLYG5QyvDh6XfnMe7p5omUXhGmb0oJh4FCqHk+IDOlJrNXRFWtRK6i4NcMipH/Q0EjQ4UZhlWP/sCUbvXTIY6+BOgEbvO6xyHF6nA8esk+XzP6PkgXkKRHIKm9NghaZ2cbkjYkMaMBrWcniK0Fv8HHBecdDzGgVJhGHClNeVdSvDMBgPjGxtBXMsULyVSeRksoNiinn9JGVJ4XRbiz9uTu5nT7HgjFbp1KPOUCR4RIU6fKGOWC5RKk2PekbpcYIVhiSmvXexWqCI6uB+Aa15gUBdVu/T4PIkQ4lqQYsG4QZz3FJpV07vgygiBChu1DHX6H2HVK4mYql2c2UyV07/UuiikyGmDNRn2CDswjFNTmb+Qq8UJ+qYXYuAJTKUMqC9hGIy8B4tYkV6FEM99+ShDyJH32+yvoLQbODhOpliAwzIFIWIuZzoJOnuLOxsLey61/aSBFhAGT2wr7FDLyShwnaFHOcKrU0jBAyf1RhPUo+dxogAAAKvSURBVG8TOOoSN8TMJC6rFdJWNBPdHwVF1K3+zxBqF4qhBXq/MtlzMKbxzUYde43ed2glEULlZD0NPr164TcaAoc6B9oHF9zdRb1Ypz4DUcFqlYwIr6OQTemUrpALtLwyz2KJQtFwBslecFBFI7/WODNLKpZwmfMPGcCJscdU9Zam2rENYw4cXEogZZHbS7vXJxtOmfEX0PRRcoegWDHh5Z8v39CBeuaYX3pa+kTnmLsKnVAiFzfvTTZUKNEkp4hiTvRsOObuXgNSl0xRRKzUyxvxJYz2xudPaFQAUzOcMd93/DV63yFVzNwiNX9HX/oM52B54dd4oPH6MtfnUFQn0zqNSo+Ti7s7ligY0wjQJDuC+AzDhRahoSF5SorgQhZX2vBHbVGjJ0MS1CUKRHzwlUJOdMSGukCGjkIXswcsIkpBvGUK2VWymXXWZkCSIA0zZZo98nH9G8h33b1Gd7BZjB1QupjAqOYlpyFbGcm+MD4KbtX4Ex6hJ+ZuglHSu+FclPhk8s2zz/BcYh4Ekv3oz+8b9SGN3nfEtHp6L/DSdRaxA0mPTp/yxzread6fj6l+v/59nfUz+9cuPKLDLZXICioMYfWoY6zR+46YTFk9+/T2p09XFveun3m0fubh+qlnm4uPVxeenKhjbfHR+rnHm5On21/t7377+0/f/fHg8osHl1/sfvP87qX9zcnT1YW9lbMPVxf2Vhcer5x99L518KwZaCN6dFrAjgGfd9SHNHrfEZOCaim44DGNOoP7/x6H/eeHU2cUzyNBVzMBw9VNoubmzfGedTpSQpVhWjZJNX571DHX6H1HTSqCmII4lHjChSG3f2KOt2+Ju7trfB7Tm99yPI8/eO86Mba+vhJJ7oox9nWcBI3ed9Q0et/ofaM+hkbvO2Ia97zjnnfUR9E/lkZ03/SJ/nQAAAAASUVORK5CYII=" 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Dove trovare la vitamina B9?

La vitamina B9 non è sintetizzata dall’organismo e quindi non siamo in grado di produrla. Tra gli alimenti ricchi di questa vitamina, il lievito ha un tasso record di 200 microgrammi per 100g. Ma la si trova in buone dosi anche nelle insalate e nelle verdure a foglie (spinaci, cavoli, acetosa…), nella frutta secca come noci, mandorle, anacardi, pistacchi… È presente anche nei piselli, nei fagiolini, nell’avocado, nel tuorlo d’uovo, nel camembert, nei formaggi con la muffa, nel roquefort e nella frutta arancione (albicocche, melone, mango). Attenzione, la vitamina B9 è relativamente fragile. Non lasciar cuocere troppo a lungo gli alimenti che la contengono. Fai scorta d’insalate di spinaci con noci, fagiolini croccanti, uova sode,  camembert (pastorizzato!), cavolo stufato… E mango per dessert. Non dimenticare di insaporire i tuoi piatti e le tue insalate con il lievito di birra.

L’importanza degli integratori

Negli ultimi decenni anche in Italia le autorità sanitarie hanno iniziato a raccomandare un’integrazione di acido folico due mesi prima dell’inizio della gravidanza e per tutto il primo trimestre. Tuttavia, per mancanza di informazioni a riguardo, questa raccomandazione resta ancora poco seguita. Le future mamme non devono esitare a richiedere al proprio medico di fiducia detti integratori alimentari. La maggior parte di loro riceverà integratori di vitamina B9 in dosi di 0,4 mg al giorno. Per le donne a rischio, la prescrizione è di 5 mg al giorno, soprattutto nei casi di gravidanze ravvicinate o gemellari, nelle donne che fumano, o ancora in quelle che hanno problemi di alcolismo. Questa integrazione di 5 mg è sistematica anche nelle mamme che hanno avuto figli con una malformazione neurologica.

Formule nuove ed efficaci

Se è importante integrare la vitamina B9, è altrettanto indispensabile scegliere integratori alimentari efficaci. Durante un periodo così particolare come la gravidanza, metti le chance tutte dalla tua parte. Oggi sul mercato esistono integratori di nuova generazione. Destinati alla donna che pianifica una gravidanza, o che è già incinta, associano due forme di vitamina B9: l’acido folico e il Metafolin®. Il Metafolin® è oggetto di un vero e proprio interesse in quanto è direttamente attivo e biodisponibile per tutte le donne. Un aspetto molto importante considerando che una donna su due non assimila del tutto l’acido folico solitamente disponibile negli integratori. Grazie al Metafolin®, la formazione di riserve di folati è più rapida.

Perciò, se stai pensando a un figlio, ricordati della vitamina B9!  

Nadine Ker Armel

Commenta
20/07/2012
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