Been vegan for 13 years and have varied between normal healthy weight, prob slightly underweight and now a few stone overweight. All for various reasons (current situation not helped by comfort eating and PND). Hey Ho, once the healthy mindset kicks in it will go again. I've found the vegan lifestyle does lend itself to healthy eating quite nicely once you're in the right frame of mind... But in my experience you can follow whatever diet you want but you won't succeed unless your head's in the right place. Good luck!