Omega-3 yağ asitleri sayesinde:

• Trigliseritler ve kolesterol düşer, böylece ateroskleroz ve buna bağlı kalp hastalıkları, kalp krizi ve akut inme riski azalır.
• Bağışıklık sistemi güçlenir
• Kansere karşı koruma sağlanır
• Beyin, retina, sperm, cilt hücreleri güçlenir
• İnsülin kullanımını artar (diyabet için faydalı)
• Kanı inceltir ve akışını kolaylaştırır, kanın pıhtılaşmasını önler
• Yangı önleyici etkisiyle romatizmal hastalıklara karşı koruma sağlar

Göz sağlığında rolü

Yüksek doz omega-3 alımı gözde yaşa bağlı olarak gelişen sarı nokta hasarları riskini önleyebilmektedir. Omega-3 yağ asitleri eksikliğinde, retinada görme fonksiyonunun azaldığı tesbit edilmiştir.

Anne-bebek sağlığında rolü

Omega-3 yağ asitleri, anne karnındaki bebeğin sağlıklı gelişimine aşağıdaki şekillerde yardımcı olabilir:

• Bebeğin beyin ve retina gelişiminin desteklenmesi
• Erken doğum riskinni azaltılması
• Hamilelik süresinin ve bebeğin doğum ağırlığının artırılması
• Doğum sonrası depresyonundan korunulması
• Omega-3 yağ asitleri ayrıca çocuğun matematik zekasının geliştirilmesine, okuma, telaffuz ve yazma beceresini artırılmasına yardımcı olabilir.

Zihin sağlığında rolü

Omega-3 yağ asidinin beyin ve sinir sisteminin sağlıklı şekilde çalışmasındaki etkileri yapılan pek çok araştırmada ortaya konmuştur. Omega-3, beyin ve sinir sisteminde başlıca aşağıdaki şekillerde yardımcı olabilir:

• Depresyon tedavisini desteklemesi
• Bunama ve Alzheimer hastalığı riskinin azaltmasına yardımcı olması
• Ruh hali, konsantrasyon, bellek, dikkat ve davranış bozukluklarına karşı yardımcı olması
• Saldırganlık azaltmaya ve sakinleştirmeye yardımcı olması
• Mizaç, tepkisellik ve kişilik üzerinde olumlu etkisi olması

Kemik-eklem sağlığında rolü

EPA ve DHA’nın antienflamatuar etkisi vardır, ayrıca kas-iskelet sistemi ve bağışıklık sistemi üzerinde faydalı etkileri bulunmaktadır. Omega-3 kemik ve eklem sağlığında başlıca aşağıdaki şekillerde yardımcı olabilir:

• Kemiklerde kalsiyum toplanmasına destek olarak güçlenmelerinin sağlanması
• Eklem iltihabı ve kıkırdağa zarar veren enzim aktivitesinin azaltılması
• Eklemlerde hassasiyet ve sabah sertliğinin azaltılması
• Romatoid artritli hastada ilaç ihtiyacının azaltılması

Kalp-damar sağlığında rolü

Yapılan araştırmalarda, omega-3 yağ asitlerinin dengeli alımının özellikle kalp ve damar hastalıkları açısından yararlı olduğu vurgulanmaktadır. Omega-3 tüketenlerde koroner kalp hastalığına bağlı ölümler daha düşük bulunmuştur. Omega-3, kalp ve damar sağlığında başlıca aşağıdaki şekillerde yardımcı olabilir:

• Kalp damar hastalığı riski olanların ya da bu hastalığa yakalanmış olanların kalp sağlığını korumaya yardımcı olması.
• Damar sertliği oluşumunun yavaşlatılması
• Trigliseritlerin kan düzeyini düşürülmesi
• Kalp hastalıklarında "kötü kolesterol"ün (LDL) düşürülüp, "iyi kolesterol"ün (HDL) artırılması.
• Kalp krizi sonrası felç, ikinci bir kalp krizi ya da ölüm riskinin azaltılması

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