Eating salad is part of the bad advice.
Severely overweight people are insulin resistant. They can’t lose weight by dieting. If they eat less their body keeps the weight and makes then lethargic.
They lose weight by eating moderately, avoiding snacks and having at least 12 hour between the last meal of the day and breakfast the next day. They need to then have two non sequential 24 hour fast (i.e. Tuesday & Friday) per week. That is exactly what many doctors tell them not to do.
I am getting my information from the book, “Why we get fat; And what to do about it,” by Gary Taubes
It is a free audio book on Amazon
https://tinyurl.com/8prjyw8a
Gary Taubes is the Alex Jones of nutrition and health.
Sometimes spot on, other times nutritional Sandy Hook.
The FDA pyramid is garbage though.
One can have ample fat and protein with a salad.
Whether hard boiled egg, avocado, Chef’s salad, dressing…