为何我们需要多吃富含Ω-3脂肪酸的食物?

2019-08-07 佚名 细胞

除了维生素和矿物质外,富含Ω-3脂肪酸的鱼油也是人们使用最广泛的补充剂,大约10%的美国人都会服用此类补充剂;当研究人员进行综述分析时他们发现,Ω-3脂肪酸或许并不能为患心脏病的人群提供健康效益,这或许并不像此前研究人员认为的那样。研究者指出,Ω-3脂肪酸是人类机体无法制造的脂肪酸,除了能有效促进机体健康之外,我们还需要从饮食中获取这类脂肪酸。

除了维生素和矿物质外,富含Ω-3脂肪酸的鱼油也是人们使用最广泛的补充剂,大约10%的美国人都会服用此类补充剂;当研究人员进行综述分析时他们发现,Ω-3脂肪酸或许并不能为患心脏病的人群提供健康效益,这或许并不像此前研究人员认为的那样。研究者指出,Ω-3脂肪酸是人类机体无法制造的脂肪酸,除了能有效促进机体健康之外,我们还需要从饮食中获取这类脂肪酸。

Ω-3脂肪酸的主要类型:

1)多脂鱼和某些贝类中的二十碳五烯酸(EPA)和二十二碳六烯酸(DHA);

2)蔬菜油、坚果(尤其是核桃)、亚麻和某些绿叶蔬菜中的α-亚麻酸(ALA)。

Ω-3脂肪酸能够帮助降低机体炎症,炎症是一种引发动脉阻塞斑块和自身免疫性疾病(风湿性关节炎)的重要因子,有研究证据表明,Ω-3脂肪酸能够适度缓解风湿性关节炎患者机体的疾病症状。同时Ω-3脂肪酸还能稀释血液降低危险血块产生的风险,但这也意味着,血管在一次切伤之后可能需要更长的时间血液才能凝固,如果同时服用血液稀释剂或非甾体类抗炎药物时对于个体而言非常危险,因为非甾体类抗炎药会导致溃疡性出血;因此,如果你正在考虑服用Ω-3脂肪酸补充剂时,需要向临床医生请教可能发生的药物相互作用。

研究者表示,鱼油对心脏健康几乎并没有好处,我们需要知道的是,大部分的研究都使用的是Ω-3脂肪酸补充剂,而并非富含这些脂肪酸的天然食物。根据有限的研究结果来看,摄入天然富含Ω-3脂肪酸的食物似乎比摄入补充剂要好,而且我们还能从食物中获取其它营养物质。

因此,每周吃两次三文鱼、金枪鱼或鳟鱼等富含脂肪的鱼类,或将螃蟹、贻贝和牡蛎等列入菜单,同时抓一把核桃作为美味的零食,这或许是或许有益Ω-3脂肪酸的最佳选择。

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    2019-08-09 yhy100201

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