To the original poster: actually, I think I had more of a problem when I first started cutting back on dairy, and then added it back in- I think I lost my tolerance for large amounts of it.
But Vegan Joe nailed it: flatulence is more of a problem. (Too much info, I know). Actually, I've been vegetarian for so long, I don't even remember if this was less of a problem when I was omni.
Peasant (1963-1972) and Fluffy (1970s?-1982- I think of you as 'Ambrose' now)- Your spirits outshone some humans I have known. Be happy forever.