I too read that book "How Not to Die" by M. Gregor, MD. and also get email updates from his Nutrition Facts website that are awesome. https://nutritionfacts.org/ That group is not for profit and doesn't promote/sell anything except evidence based research (except the book proceeds are not for the doctor's personal gain). So after a lifetime of the standard American diet, I transitioned to eating whole foods, plant based as much as possible. It is good and takes the right motivation to change. Breast cancer & wanting to have a long life was it for me. 😀