There are many opinions on how mono's don't lead to weight loss bla bla bla.
But rather than looking at the small picture let's look at the bigger picture.
1) you get to have a variety of food without the need to obsessively count calories
2) your mind is more relaxed because there are not many meal choices. You only have one meal choice and that is: the respective mono food
3) you get rid of cravings.
So, If you have a high bmi like mine: 23. Doing monos i think is good only for a start. because when i was at a lower bmi 18, I stuck only to fruit and veggie monos. Maybe some keto monos, but no sugar monos (maybe once a month)
I like to combine mono with fasting. AKA I will fast for 20-22 hours after each mono and eat the next mono after that fast.
I like having one meal rather than spacing it out i noticed that helps with my sugar levels.
I also like to plan so if i ramble a lot here on my plans please ignore me