Long post. Sorry.
I feel your pain. After reading The China Study, I cried because I love dairy products. I switched that day and ate that way for years. It is not just Vegan. It is No Fat Vegan. Well except for a rare nut or small helping of avocado occasionally, something acknowledged but discouraged. Yes, I read and saw it all and had a huge library of information and cookbooks. Still miss the China Study cookbooks granola and some of the happy herbivore’s soups.
So, what happened? Yes, I lost some weight, but I was always hungry, even though I ate huge volumes of food. I also had terrible cravings and missed being able to eat out. There is only one vegan restaurant near me.
Trivia: In the firehouse cookbook, when mentioning blood work, the author says his labs were off because once a year he indulges in a large hamburger which he had done the day before. Interesting because his whole family has eaten this way for years, they write resource and cookbooks about it, and his physician father prescribes it. Yet, he still craves meat.
So, one day I gave into my cravings. I think I had pizza. Over time, I gave in more and more. My weight started to go up and I remembered the Atkins diet from high school. Yes, I am that old. What I found was that I wasn’t hungry and ate less. I also lost the few pounds I had put on when eating carbs, protein, and fat. To me, that meant that my body was happier eating this way. Yes, when I was Vegan I felt morally superior, but my body wasn’t as happy. I stayed low carb/Atkinsish for a year or so, toying with Keto, until I found out I was diabetic. Then I switched to Keto. This is just my story.
Although plant based people will not admit this, recall moral superiority, some LCHF/Keto people will. High carb with low/no fat works well for some people. Just like high fat with low carb works well for some people. I do recall a study that compared the two and I think the conclusion was that the high carb worked well for people with no glucose metabolism issues. Whatever, it seems that carbs + fat does not work well for anyone. I also recall something about non-fat vegan working for overweight T2’s because the body needs fats to make hormones and such, and will pull them out of the liver and pancreas when not included in the diet. This can improve insulin production if it is being inhibited by a fatty pancreas.
Although the author of The China Study points out he was raised on a dairy farm and believed milk to be the perfect food, lending strength to his conversion to a vegan diet, I now question the study. I feel the conclusions are more about eating a processed food diet vs eating a real food diet. There were no areas in China eating a more paleo type diet to add to the mix. The areas compared were either remote and agricultural farming or more industrialized with more processed foods. Comparing the two, yes, agricultural won. But a diet low in carbs was not even on the table. Carbs were either natural or processed, never restricted. For me that means that NO conclusions about the benefit or detriment of LCHF can be drawn from the China Study. Apples and Oranges.
I would seriously consider letting your friends know that you are diabetic and severely carb intolerant. Let them know you respect their choices, but expect them to respect yours in return. That you have done the research, understand their view, but your body is making this choice as to what it can and cannot tolerate. This is your life, literally, and you need to do what is best for your body. Continuing lectures will only lead to resentment and you do not want to lose their friendship over something like food choices.