I got to take part in a cookbook club (a potluck where everybody makes something from the same cookbook), because a health scare turned one of my friends on to How Not to Die, and they realized it was vegan and invited me along. Another friend bought the Forks Over Knives cookbook and used it a bunch without even realizing it was vegan.
I know a lot of vegans who think people won’t stick with veganism if they do it for health, because they’ll just think of it as a diet, and diets are hard to keep, but I think anything that gets people exploring veganism is a great thing!