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Trans Fats (Trans fatty acids)
This type of fat (also known as 'partially hydrogenated fats') is made from poly-unsaturates, so was originally thought to be beneficial. However, there is now evidence that trans fats are linked to an increased risk of heart disease and certain cancers. They are found most often in hard margarines, and manufacturers are taking steps to reduce the amount used. They are also hidden away in manufactured biscuits and the like. See 'Butter'; 'Margarine'; 'Stanols and Sterols'