You should watch this even if you don't care about diabetes. Peter Attia is a doctor who has developed a deep, empathic humility. It is motivating him to question how we currently view diabetes and obesity. The story is personal, but also clinical, and it may change the way you see doctors.
Back to diabetes, Attia has found that insulin resistance causes obesity, rather than obesity causing diabetes. This is a huge difference and it turns our conventional wisdom about obesity upside down. Fat people are becoming obese and diabetic because of another process that is going on - NOT because of overeating and lack of exercise.
This other process, the cause of insulin resistance, may be the consumption of processed sugars and grains. It may be due to consuming too much corn syrup and our over-glutenized wheat. These are both relatively new foods for us, popularized by convenience foods that emerged in the 1950's and have now come to dominate our food supply. Fortunately for us, Dr. Attia has stepped up and is working on a research team that is looking into different aspects of this problem.