(5 mins) Transcript. Dr Greger's summary: "Saturated fat can be toxic to the insulin-producing beta cells in the pancreas, explaining why animal fat consumption can impair insulin secretion, not just insulin sensitivity."

(5 mins) Transcript. Dr Greger's summary: "Prediabetes and type 2 diabetes are caused by a drop in insulin sensitivity blamed on “intramyocellular lipid,” the buildup of fat inside our muscle cells."

(4 mins) Transcript. Dr Greger's summary: "Being obese may result in as much insulin resistance as eating a high-fat diet."

(5 mins) Transcript. Dr Greger's summary: "The reason those eating plant-based diets have less fat buildup in their muscle cells and less insulin resistance may be because saturated fats appear to impair blood sugar control the most."