vitaamin A

is lekh ko vikifaai karne ki aavashyakta ho sakti hai taaki yeh vikipeediya ke gunavatta maanakon par khara utar sake. krupaya praasangik aantarik kadiyaaain jodkar, ya lekh ka leaaut sudhaar kar sahaayata pradaan karein. (May 2016) adhik jaankaari ke liye daahini or [dikhaaeain] par klik karein. krupaya upayukt sthaanon par HTML markup ki jagah viki markup ka prayog karein. vyaakaran sambandhit trutiyon ko sudhaarein. vikilink jodein. uchit sthaanon par shabdon ke dono or [[ aur ]] daalkar anya lekhon ki kadiyaaain jodein. aise shabdon ki kadiyaaain na jodein jo adhiktar paathak jaante hon, jaise aam vyavasaayon ke naam aur rojmarra ki vastueain. adhik jaankaari ke liye svashiksha lein. bhoomika baaaindhein lekh ki bhoomika banaaeain athva sudhaarein. shaili maargadarshak ke anusaar bhaagon ko vyavasthit roop se lagaaeain. yadi upayukt ho to lekh mein jnyaaanasandook jodein. is sab ke pashchaat yeh taig hataaeain.

yeh sujhaav diya jaata hai ki is lekh ya bhaag ka retinin ke saath vilay kar diya jaae. (vaarta)

yeh lekh athva anubhaag adhoora hai tatha ise vistaar athva saaf-safaai ki aavashyakta hai. krupya lekh/anubhaag ko poorn karein ya vishay ki charchavaarta prushth par karein .

is lekh mein satyaapan hetu atirikt sandarbh athva sroton ki aavashyakta hai. krupaya vishvasaneeya srot jodkar is lekh mein sudhaar karein. srotaheen saamagri ko chunauteedi ja sakti hai aur hataaya bhi ja sakta hai. (September 2015)

poshak A aankhon se dekhne ke liye atyant aavashyak hota hai. saath hi yeh beemaari se bachane ke kaam aata hai. yeh poshak shareer mein anek angon ko saamaanya roop mein banaaye rakhane mein madad karta hai jaise ki tvacha, baal, naakhoon, granthi, daant, masooda aur haddi. sabse mahatvapoorn sthiti jo ki sirf poshak A ke abhaav mein hota hai, vah hai andhera mein kam dikhaai dena, jise rataundhi kehte hain. iske saath aankhon mein aansoo ke kami se aankh sookh jaate hain aur usamein ghaav bhi ho sakta hai. bachchon mein poshak A ke abhaav mein vikaas dheere ho jaata hai, jisse ki unke kad par asar kar sakta hai. tvacha aur baalon mein bhi sookhaapan ho jaata hai aur unamein se chamak chala jaata hai. sankramit beemaari hone ka sambhaavana badh jaata hai.

atyaadhik poshak A lene se shareer par anek durprabhaav ho sakte hain jaise ki sirdard, dekhne mein dikkat, thakaavat, dast, baal girna, tvacha kharaab ho jaana, haddi aur jodon mein dard, kaleja ko nuksaan pahuainchana aur ladakiyon mein asamaya maasik dharm. garbh ke dauraan khaas saavadhaani – atyaadhik poshak A, pet mein palate bachche ko nuksaan pahuaincha sakta hai.

doodh aur doodh se utapaadit khaadya padaarth, hari sabji, peele sabji (shakarakand, gaajar), peele ya naarangi rang ke fal (naarangi, aam), maans (yakrut), kornaflekas ya anya krutrim khaadya padaarth jismein nirmaata dvaara atirikt poshak A milaaya gaya ho. poshak A do tarah ke ikaai se naapa jaata hai. inko badalne ke liye sootr hai -

• 1 IU = 1 International Unit = 0.3 microgram Retinol Equivalent
• 1 I yu = 1 antararaashtreeya yunit = 0.3 maaikrograam retinol ke baraabar

poshak A ka dainik aavashyakta aayu aur sehat ke anusaar badalate rahata hai.

• janm se 6 maheene ke umr ke shishu ko kareeb 1333 aai yu ya 400 maaikrograam
• 6 se 12 maheene ke umr ke shishu ko kareeb 1666 aai yu ya 500 maaikrograam
• 1 se 3 saal ke bachche ko kareeb 1000 aai yu ya 300 maaikrograam
• 4 se 8 saal ke bachche ko kareeb 1333 aai yu ya 400 maaikrograam
• 9 se 13 saal ke bachche ko kareeb 2000 aai yu ya 600 maaikrograam
• 14 se 30 saal ke purush ko kareeb 3000 aai yu ya 900 maaikrograam
• 14 se 30 saal ke mahila ko kareeb 2333 aai yu ya 700 maaikrograam
• garbh ke dauraan kareeb 2500 aai yu ya 750 maaikrograam
• stanapaan ke dauraan kareeb 4000 aai yu ya 1200 maaikrograam

saaaincha:poshak srot