The low-carbohydrate food movement gave birth to such diets as the Atkins, Paleo and Keto, which advised swapping foods like bread, pasta and potatoes for vegetables, fish and meat.

低碳水化合物饮食运动催生了阿特金斯饮食法、旧石器饮食法和生酮饮食法等饮食方法，这些饮食方法建议将面包、意大利面和土豆等食物换成蔬菜、鱼和肉。

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"The seafood portion of American diets is heavily skewed toward what is called charismatic predator fish, " Eshel said, which are harder to catch.

美国人饮食中的海产品部分，很倾向于所谓的能力超凡的食肉鱼，它们很难捕捉。

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A handful of studies have linked fish-heavy diets with reduced risk of mental decline in old age.

多种研究表明，侧重于鱼类的饮食可降低年老时脑力下降的风险。

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Twenty kittiwake chicks were hatched in captivity and assigned randomly to four fish diets: high-volume high-lipid, high-volume low-lipid, low-volume high-lipid, and low-volume low-lipid.

BBC: NEWS | Science/Nature | Birds hit by climate, diet shift

"People who choose to eat more fish are more likely to eat heart healthier diets and engage in more physical activity, " and studies testing the benefit of supplements may not be able to completely adjust for differences like these, said Alice Lichtenstein, director of the cardiovascular nutrition lab at Tufts University in Boston.

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It would be easier for people to focus on adding particular elements to their diets -- for example, by taking fish oil capsules -- rather than trying to readjust their eating habits altogether.

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