How to live with parents who refuse to cook "clean" or even entertain the idea of a healthy lifestyle?

My parents’ excuse is that they don’t know how to cook healthy…so they’ll stick to dousing every vegetable in butter right after it’s cooked and then again when it’s on their plate.

If we even have a substantial vegetable…usually the sole “vegetable” is corn (soaked in butter).

It’s usually only fatty meats as well…we may have chicken once a month and when we do it’s Chicken Gorky (if you don’t know what that is, it’s basically chicken smothered in a sour cream/feta cheese/vodka/tomato mix).

My stepmother is so fat she can’t walk up a flight of stairs without keeling over yet claims to have the lungs of an athlete.

The one healthy thing I’ve managed to get them to buy me is almond milk (the alternative is 100% whole milk, I tried switching them to AT LEAST 2% and they said it tasted like water).

And they act like it’s a sin that I even drink an almond based milk. I practically beg and plead for them to buy it for me every time…however…they’ll buy me a carton of Starbucks coffee (I don’t drink it anymore) for the same price without a second thought.

It’s like they want me to eat unhealthy…they want me to not exercise and be fat.

I don’t really understand…they used to buy oat bread (tried to get them to buy wheat but they said it tasted like sandpaper) but since I’ve been trying to lose weight they stopped and now only buy honey flavored white bread.

There’s not a single real fruit in our fruit drawer, only canned fruit which I’m told are the same thing.
And the vegetables consist of celery and tomatoes.

I have to make my own breakfasts and lunches and I’m pretty much limited to fiber bars, oatmeal, whole-grain Goldfish, ham, bananas, and the celery. That’s all I can eat if I want to eat “clean”.

I eat whatever they cook for dinner because I have no other choice except to starve but then I won’t have energy for pilates.

What can I do? Is it actually possible that they want me to be fat?