Life in the Fasting Lane: The Essential Guide to Making Intermittent Fasting Simple, Sustainable, and Enjoyable, by Dr. Jason Fung, Eve Mayer, Dr. Megan Ramos.
Everyone with obesity or medical problems should read this book, or something like it.
To make it as short as possible, eating constantly is unnatural, and the body is not built for it. So it is no surprise that as snacking got popular, so did obesity and diabetes.
Some fasting, which happened all the time over mankind's history, is good for you, and specially helpful if you are trying to lose weight or improve your health.
I have already been fasting for about an year (lost 12kg in 4 months, and then a little more over the course of the pandemic) and I saw a lot of his interviews and online advice when I started. Later I read one of his books.
This book added a bit to it, including some useful advice on how to fast, as well as how to fit fasting in your life.