Having lost 125lbs by following a very strict food plan. I doubt your friend is being honest with themselves about their portion size. I have to weigh everythi

Having lost 125lbs by following a very strict food plan. I doubt your friend is being honest with themselves about their portion size. I have to weigh everything to stay on track to lose weight at the rate I want to. (Despite losing 125lbs I'm still morbidly obese). My ability to estimate portion size is so hilariously bad I have started to assume 500 calories for each Carb or 'rich food'(meat, cheese etc) I have to guess on and 300 calories for each veg or fruit serving I guess. Experience has shown that I am actually roughly that bad and calculating serving sizes for things. Also depending on their height they may need to eat a 1500, or 1200 calorie diet to trigger weight loss(consult a pro to help guide this process).