Where would I find this documentary? I thought that merely consuming grains that are converted to sugar in the body can cause diabetes, except when it comes to rice ... for people from Asia, since that's been their bread and butter for thousands of years. I know I gain a lot of weight when I'm consuming a lot of sugar, and some forms of diabetes can be cured through losing excess weight. Then there's all of the research saying that eating only vegetables is causing people to have major deficiencies in important categories, and those who have switched back to eating meat suddenly feeling so much better like the flip of a switch.
I keep an open mind, but I find it hard to believe that there's some sort of anti-vegetarian shadow conspiracy that's controlled the narrative at literally all levels. As previously mentioned, my mother works in healthcare. She's in nuclear medicine, but that intersects with a lot of different types of imaging, and she does run stress tests on patients, and communicates directly with a lot of people involved in such. I've learned most of what I have heard from her.