Donlol

It doesn't affect your fitness at all - those perks just make you move much slower and tire faster, at least as far as I know. Edit: I'm on 34.12, maybe in 33 it's different?

Woah indeed, I started a new game with an obese character just to check if that trait really changes as you lose weight. And indeed, when my weight fell below 100 I've become overweight instead of obese. Thanks a bunch for that info, didn't think TIS implemented that feature And hooray for extra 10 points during character creation!

One thing that came to my mind - if you took the obese trait at the start of the game, when you die of starvation with new nutrition system are you still obese at the moment of death? I've not explored the nutrition system too much, but from what I heard/read you can gain/lose weight depending on what and how much you eat. So does your weight "influence" the weight related traits? If no, then imo it definitely should. You shouldn't die of starvation while still being a fat pig