I'm lactose intolerant. Why does this matter? It doesn't really. It simply meens I have problems digesting lactose so I can't consume much "normal" milk at once. My first solution was to drink soy milk. I didn't like it that much although the real issue was the cost. It came in half gallon containers and each cost as much as a gallon of cow's milk.
I bring this up in relation to an interview that UN climate chief Lord Stern of Brentford said in an interview. Lord Stern said that all people should go vegitarian to help combat climate change.
The cost was an annoyance to my family although nothing real severe. It would take some juggling but I'm pretty sure most families in the United States could go vegan and take on the extra costs if they looked hard at their budget. Here's the thing though: we're the country with the largest economy on the planet and we have an industrialized transportation network. Considering that a significant portion of the population live on less then two dollars a day, though, that statement seems dubiose at best to generalize to the rest of the planet.
Lord Stern also brings up health and this also goes back to my story. I used to drink milk all the time. I disliked the taste of soymilk so I naturally drank less. Even if soymilk is healthier (and it is) then cow's milk, the decrease in how much I drank would probably offset any benefit. So this statement assumes that the people enjoy the new diet and that assumes that they can afford it in the first place.
Of course, I'm not sure if any of this really matters to Lord Stern. He's not a vegan himself and I'm just guessing that the title "Lord" means that he won't have to worry about all those extra costs to meat.