I'm a personal trainer and I have one particular client whose diet I'm curious about, though to be fair this could probably apply to all my female clients.
This woman is about 5'3 and ~245lbs. She has multiple knee issues but we can do all the major movements no problem. I work with her 2 days a week doing strength training and she does cardio 3 other days per week on her own, as well as making little changes; stairs not elevators, parking further, etc etc.
I recently asked her about her diet. She said that she is working with a nutritionist who has had her eating 1400 calories a day. I asked her if this was even with the exercise she's now doing and she said yes.
Now I'm glad she's working with a nutritionist since I by no means claim to be an expert on that. However, from what I do know, doesn't that seem really quite low for a woman her size just starting out dieting / exercising? Maybe just being a powerlifter myself and hanging around other powerlifters makes 2000 a day seem like a modest number to me.
Are nutritionists like personal trainers; some are just total shit? Of course I'm always open to the option that I don't know what I'm talking about.