I don't doubt that they actually eat vegan, there's a lot of vegan junk food out there. Basically anything you eat as an omnivore, you can get vegan equivalent. So icecream, cookies, cakes, cheese, beetus juice, burgers, etc. vegan food used to be all veggie-centered until some years ago, but now you can definitely be vegan AND a hamplanet. That said, I did lose a lot of weight when I became vegan some 6 or 7 years ago, and I don't stress about eating "healthy" all the time. For example, I just had lunch, and it was instant noodles, a vegan burger and a couple of oranges. Hardly something people would consider "healthy", and still I'm not a fatass.