The Fitness Chef
https://www.dailymail.co.uk/femail/article-10460637/Health-coach-busts-11-common-diet-myths.html
With in groups I have been recommending the reading of, The Fitness Chef - Lose Weight Without Losing Your Minds. - Graeme Tomlinson.
This article is a breakdown of his book and a great read.
Graeme Tomlinson has written two other books.
Book one - The Fitness Chef: Eat What You Like & Lose Weight For Life.
Book two is a cookbook - The Fitness Chef: Still Tasty: Reduced-calorie versions of 100 absolute favourite meals.