Alışveriş sepetiniz boş!
D vitamini bağırsakta kalsiyum emilimini, böbrekte kalsiyum ve fosforun geri emilimini arttırıyor.
D vitamininin net etkisi; kan kalsiyum düzeyini belirli bir seviyede tutmak. Yeterince kalsiyum tüketenlerde kalsiyumun kemikte depolanmasını, böylelikle mineralizasyonu sağlıyor.
D vitamini kemik büyümesi, kemik yapısının korunması, kan pıhtılaşması, kardiyovasküler sistem ve bağışıklık sistemi üzerinde de etkili oluyor.
Günlük ihtiyaç yaklaşık 400- 600 IU civarındadır. 65 yaş ve üstü yetişkinlerin günlük ortalama 800 IU D vitamini almaları gerekiyor. Hamilelikte ihtiyaç daha da artıyor.
D vitamini desteğinin yanında yeterli kalsiyum alımının sağlanması önemli. Yeterince kalsiyum alınmazsa D vitamini, kemikten kana kalsiyum geçişine neden oluyor. D vitamini düzeyi 25 ng/mL'nin altına inince eksiklik başlıyor.
D vitamini eksikliğine kapalı ortamlarda çalışanlarda, çölyak hastaları gibi bağırsak emilim bozukluğu olanlarda, ilerlemiş karaciğer hastalığında, bazı ilaçları sürekli kullananlarda daha sık olarak rastlanıyor.
Cilt kanseri riski nedeniyle özellikle beyaz tenlilerin güneş ışınlarıyla temastan kaçınması D vitamini eksikliği riskini beraberinde getiriyor. Cilt kanserinden korunmak için kullanılan güneş koruyucular da D vitamini sentezi açısından güneşten faydalanmamıza engel oluyor.
D vitamini eksikliğinde kemik mineral yoğunluğunda azalma meydana gelir, bunun sonucunda da halk arasında kemik erimesi olarak bilinen osteoporoz oluşur.
Ciddi düzeyde eksiklik varsa çocuklarda rickets, yetişkinlerde ise osteomalazi olarak bilinen hastalıklar ortaya çıkabilir.
D vitamini eksikliğinde enfeksiyonlara direnç azalıyor, kaslarda güçsüzlük, halsizlik, gece krampları meydana gelebiliyor. Ayrıca D vitamini eksikliğinin depresyonla, kanserle ilişkisi olduğunu gösteren çalışmalar da mevcut.
D vitamini eksikliği sadece kemiklerinizi değil, bağışıklık sisteminizi de etkiliyor! D vitamini sentezi için güneş ışığına ihtiyaç var. Bu nedenle özellikle kapalı ortamlarda çalışanların D vitamini eksikliğini saptayan testi yaptırmayı ihmal etmemeleri gerekiyor! Ülkemizde D vitamini eksikliği yaygın bir sorun. Bunun nedeni ise gıdalarla aldığımız miktarın yetersiz kalması. Güneşten gelen UV ışınları cildimizdeki D vitamini sentezi için gerekli. Bu yüzden kapalı ortamlarda daha fazla zaman geçiren kişilerde D vitamini eksikliğine daha sık rastlanıyor.
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