One type of natural trans fat, found in animal products, has been shown to have beneficial effects on diabetes, cardiovascular disease, and immune response.
一种是自然产生的反式脂肪——多来自动物制品——已经被证明对糖尿病，心血管疾病有免疫和积极的效果。
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In contrast, many studies suggest that diets which are rich in trans - and saturated fatty acids, such as those containing a lot of deep-fried foods and butter, have bad effects on cognition.