@pintopanto - the poorer nations are also struggling more with general health, malnutrition, various diseases, digestion issues, parasites. Let's please stop giving the nations of the Third World as an example of how veganism is great because they eat vegan and they're just fine. They're vegan out of necessity, not because they love it so much, FFS!
We have our own garden and buy the rest of the food from an organic shop. It's more expensive than those bought in the supermarket.
If we really want to do something for the environment, we need to do a complete rethinking of where we source our food from and how much we really need to produce - that's the future of our food industry, one that will be very difficult to pursue because in order to sell more, people are targeted with aggressive advertising for more choice, more snacks, new flavours etc.
Also, with the growing number of people on the poverty line in Britain - do they have the skills to cook nutritious vegan food? Do they have anywhere to cook it? Can they actually afford it?
Yes, in the past poor people ate what's considered healthy nutrition now. Whole wheat grains, bread, gruel, plants. But they used honey, milk, butter and eggs and their biggest dream was a slab of bacon to put on their bread. They were also much smaller than the classes who lived mostly on protein rich diet and suffered from malnutrition.
I don't mind if someone gives an example of people who are vegan by choice. Let's just stop the most awful habit of vegans to use the poorest nations as some "noble savages": Oh, look at those dear people, they are vegan and they're so happy!!! Bet you, if you offered them a steak, a piece of chicken or something as simple as eggs, honey or cheese, they wouldn't say no.