I suppose Linda had a lot to do with changing Paul's eating habits. I think he was depressed around Let it Be and I know personally that depression can lead to poor eating habits, especially eating too much, even when you're not hungry.
I'm interested in this topic because I've lost a bunch of weight in the last year and I'm trying to keep it off. I get depressed a lot so it's an ongoing uphill battle for me.
But, I'm never have a Linda McCartney in my life so I'm sadly on my own. And I can't do vegan; I've tried.
I'm basically a carnivore who also enjoys lots of refined sugar in his diet. Yep.