欧米茄-6 脂肪酸是什么？摄入欧米茄-6 脂肪酸会导致心脏病吗？
回答 Francisco Lopez-Jimenez 博士
ω-6 脂肪酸是一种脂肪，叫做多不饱和脂肪。ω-6 脂肪酸存在于植物油、坚果和种子中。这些食物可以少量食用，代替在室温下呈固态的饱和脂肪。ω-6 脂肪酸对心脏有益，似乎还可以预防心脏病。
人体需要的脂肪酸称为必需脂肪酸。人体可以合成自己需要的大部分脂肪酸。但无法合成亚麻酸，这是一种包括 ω-6 脂肪酸在内的必需脂肪酸。健康饮食是人体 ω-6 脂肪酸的主要来源。
不同的脂肪酸会对人体产生不同的影响。有些脂肪酸被认为会引起肿胀和刺激，即发炎。但也有一些脂肪酸似乎能对抗肿胀和刺激，即消炎。研究未能证明 ω-6 脂肪酸与心脏病风险增加之间存在关联。事实上，研究结果表明，ω-6 脂肪酸可能会降低患心脏病或卒中的风险。
在了解到更多相关信息之前，建议限制饮食中的饱和脂肪，帮助保持心脏健康。可选择植物油，如亚麻籽油或芥花籽油。增加饮食中 ω-6 脂肪酸含量的一个方法是烹饪时用橄榄油替代黄油。或者选择巴西坚果或核桃等食物作为零食。这些食物同样富含 ω-6 脂肪酸。
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Francisco Lopez-Jimenez 博士
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Original article: https://www.mayoclinic.org/zh-hans/diseases-conditions/heart-disease/expert-answers/omega-6/faq-20058172