Follow the link and look at the pic.
My commentary on this is that I have been vegetarian for over 15 years now. And my BMI is currently borderline 'obese'. And only borderline because I've lost some weight.
Now, I don't have a meat-eating twin to compare to. Possibly I'm healthier as a vegetarian than I would be otherwise. I rather doubt I'd weigh any more as a meat-eater. Quite possibly less, because I've spent years living on pasta, rice, and potatoes.
I'm currently iron-deficiently anemic. And that is directly due to being vegetarian.
My triglycerides are high, which is possibly genetic, but also due to all those carbs.
I'm not saying that a _good_ vegetarian diet isn't all-around healthier, better for the environment, and nicer on the animals. But I am saying that there are fat vegetarians out there. A whole lot of us, in fact.
So why do you want to go annoy and anger people who are actually ON YOUR SIDE?