I have seen people saying that they eat all they want of just about anything, and are still losing weight; but that doesn’t seem to work for everyone. Other people in the OMAD facebook group have said that unless they limit carbs that they are hungry all of the time, and have trouble losing weight.
Possibly, insulin sensitivity might have something to do with this.
I read that if two people eat the exact same food, the insulin-sensitive person will secrete about 5 times as much insulin as the other person. So, the person who is not sensitive to insulin, will produce just enough insulin to digest the food, and life goes on.
The insulin sensitive person, on the other hand gains weight because insulin is the fat-storing hormone, and then they are hungry again soon because all of that extra insulin has lowered their blood sugar and made them need food again, even though the last food has not been digested.