Could this be why I'm not gaining much weight?

[Anonymous]

I have a fast metabolism anyway, but my appetite has improved and I've noticed a bit of weight has gone to my bum. However, I eat real slow and a lot of the times I struggle to finish meals, like I have to always leave some food...
Could that be the reason I don't really gain much weight?

Yes that could be the reason

No (?)

[TheINTJ]

Definitely. I've noticed that many thin people who say they just have a fast metabolism seem to overestimate the amount of food they eat. Just because you don't starve yourself or ever feel hungry doesn't mean you're eating enough. It could just be that you have a small appetite to begin with, so it doesn't take much for you to fill it.