I've been meaning to share this experience--too funny.
My World Civ professor was talking anthropology and the diet of prehistoric man. When he came to the topic of raw foods, he jokingly asked whether anyone in the room ate only raw foods. When I raised my hand, he kind of jump backed and suddenly looked a little awkward and sheepish--because what he proceeded (and was planning) to say was that, before man became civilized by cooking their food, they were weak, had rough digestion and distended bellies.
I sit up front and could hear the suppressed laughter behind me because (1) I have no distended belly, but my professor--who is always sipping a cola--has the hugest pot belly you've ever seen (and looks quite sick in general) and (2) although I said nothing, not wanting to embarass him, I was thinking "my digestion has never been BETTER!" (3) I'm only skinny in a fit sense
After class he asked condescendingly, "You're a vegan, huh?" So I told him the transition I've made to now, mostly fruit. He asks, "Where do you get your vitamins and minerals?" I've heard the protein inquiry, but THAT's new!
So that was a few weeks ago. Yesterday, while throwing popcorn into his mouth, he was talking about chakras and how you need to eat nutritious foods in order to give off positive energies (warning us to watch what we were eating but asking a kid with a health food bar to please wait to eat it until after class). And for some reason he avoided looking at me...
*UPDATE: planted another seed. I'm currently volunteering in the winter hoophouses at a local university's Student Organic Farm, and this one guy--who's kind of perfectionist, know-it-all-ish--was voicing his frustration about his unhealthy cafeteria (sometimes it would put out cooked cereal like oatmeal, but would often add lots of brown sugar and honey into it). So this guy is definitely semi-health conscious. When it came up that I eat just raw food, he stopped dead in his tracks and was like, "Whoa, wait, so you don't cook anything?"
Then he was asking about all the fruits I eat, whether I wouldn't need some more "complex" carbs (since "fruits are just sugar"), why I didn't even eat pulses, grains, or tubers. He said, "I could never do that, I would feel so weak". Of course, I expressed my surprise at his statement because I feel tired if I eat anything but fresh fruits/greens/etc.! And of course, I explained how I used to have a host of autoimmune oddities, and the only problems I could think of left are continuing to heal (circulation, acne).
He just looked kind of stupefied as we continued weeding.
Finally he said, "I just find that...*fascinating*."
Score. He'll be asking more questions soon, no doubt.
I think this sort of occurence is especially common place for me because I bring it up so nonchalantly, without any hint of proselytizing. People don't keep up their barriers very long (defenses for their own way of eating, etc.)