Not your cup of tea
Megan, I'm not sure what all you consider 'damaging foods', but I have personally had cause many times to remind myself that Christ did not come preaching salvation by a change of diet -- he seems to have eaten the common food of the time, and blessed it, and his comments about food were analogies drawn from the common foods, or the statement that the things that we put into our bodies are not what defile a man (and he was talking about basic hygiene, which as Ruben pointed out, seems to have at least as much impact on questions of health and longevity!). Obviously we should try to be good stewards of our bodies (and I'm definitely in favor of trying to get sensible nutrition to be able to do what God gives us to do as well as we are able), but common food seems to be quite good enough for such a purpose: there is a tremendous amount of guilt in many of the idolatrous food salvation schemes out there -- whether they claim to be Biblical or not -- in my experience.Obviously, God created some food that happens to be terrible for you that we can enjoy like candy and cake and stuff, but only sparingly and with thanks. Personally, I don't think making a lifestyle out of eating damaging foods on a regular basis is what God wants. I've had to repent of it many a time... actually, quite often. But, that might be legalistic of me, so I beg someone to correct me lovingly if I'm wrong.