Manufactured trans fats (a.k.a. partially hydrogenated vegetable oils) are made by adding hydrogen to liquid vegetable oils to make them solid.
Manufactured trans fats (a.k.a. partially hydrogenated vegetable oils) are made by adding hydrogen to liquid vegetable oils to make them solid. They are the most dangerous fat because of their negative impact on cholesterol, inflammation, and insulin response. Natural trans fats may be found in very small amounts in some meat and dairy, but research suggests they don’t pose the same health risk as man-made trans fats.