1. Palm oil: contains 50% of saturated fat, mainly palmitic acid which is linked to increased blood LDL or bad cholesterol, and heart health diseases. Source: EFSA: When used at high temperatures, palm oil releases GEs – glycidil fatty acid esters, which when digested releases Glycedol, which can trigger the growth of malignant tumours. EFSA warns of food products containing palm oil, as these often contain high concentrations of carcinogenic and genotoxic contaminants that can damage the liver,