Original sentence: In the 1950s Johanna Budwig hypothesized that obesity is a reflection not of overconsumption per se but due to increased appetite due to chronic fatty acid malnutrition.Research suggests a correlation between diets high in trans fats and diseases like atherosclerosis, diabetes, and cancer.USDA Fat FAQ:
Edited sentence: In recent years, the nutrional value of margarine has come under question.Margarines, shortenings, and the like are made of highly processed, deformed oils, which are stripped of natural antioxidants and sterols, and artificially saturated/cross-linked at high temperature in the presence of catalysts to change their texture.Researchers are discovering these trans fats  are proving to cause extensive membrane abnormality in animal cells, leading directly to fatty-degenerative diseases like atherosclerosis, diabetes, and cancer.They posit that obesity is a reflection not of overconsumption per se but due to increased appetite due to chronic fatty acid malnutrition.They thereby acquire abnormal "trans" molecular structures