Margarine and Spreadable Butter Substitutes

Margarine and spreadable butter substitutes often top the list of worst processed foods due to their industrial formulation, despite being marketed as heart-healthy. Many brands still rely on interesterified fats and highly refined seed oils, which can be more oxidative than butter and linked to inflammation, with a 2017 study in BMJ showing a 34% higher risk of all-cause mortality for high margarine consumers. With over 50% of market products containing added emulsifiers and stabilizers, these spreads offer no nutritional advantage over whole butter. The decades-long debate leaves consumers confused, but the data clearly shows avoiding processed oils is safer than leaning on margarine's long shelf life.