Around the mid-1950s, trans fat became widely popularized as a "healthier alternative" to saturated animal fats like butter and lard. Its beginnings go back 100 years, to Procter & Gamble’s creation of Crisco in 1911.
Margarine is not heart-healthy at all – even if it's laced with omega-3!
Trans fats: Formed during the process of hydrogenation, which turns liquid vegetable oils into a solid fat
Sodium nitrite (a commonly used preservative and antimicrobial agent) and other chemical flavorings and dyes
Free radicals: These and other toxic breakdown products are the result of high-temperature industrial processing of vegetable oils
Emulsifiers and preservatives: Numerous additives of questionable safety added to margarines and spreads. Most vegetable shortening is stabilized with preservatives like BHT.
Hexane and other solvents: Used in the extraction process and can have toxic effects
Heightened risk of breast and prostate cancers
Difficulties in pregnancy
Problems with lactation
Low birth weight
Learning disabilities in children
A US government panel of scientists determined that man-made trans fats are unsafe at any level.
Free radicals: Numerous health problems, including cancer and heart disease
Good old-fashioned butter made from grass-fed cows, which is rich in conjugated linoleic acid (CLA)