This is not news to me (about eating mostly plants). I first read about it in Colin Campbell’s book, The China Study, which contains the scientific evidence to support the benefits of eating a mostly plant-based diet. In his book, Campbell summarises the results of a longitudinal study providing clear evidence of the relationship between diet and chronic disease.
And this little ditty certainly resonates.
AN EATER'S MANIFESTO
Don't eat anything your great-grandmother wouldn't recognise.
Avoid foods with health claims.
Prepare, and if you can, grow your own food.
Don't get your food from the same place as your car gets its fuel.