Unsaturated fat can be subdivided into mono - unsaturated and poly - unsaturated fats 不飽和脂肪可分單元和多元不飽和脂肪。
Poly - unsaturated fats contain linoleic acid and linolenic acid , both of which are essential fatty acids required by our body . these kinds of fatty acids are not produced by our body , and can only be absorbed through the consumption of food 多元不飽和脂肪中的亞麻油酸及次亞麻油酸是人體必需脂肪酸,但人體不能制造的,要透過食物吸收,它們能稀釋血液濃度,降血壓及改善免疫系統(tǒng)功能。