I’m guessing here that this might be more of a GQ question than an IMHO question. I’m not specifically asking for personal health advice for myself here.
I just saw this article: Eek! Why it Might Be Time to Step Away from the Kale, Lauren Le Vine, REDBOOK, January 16, 2013, as re-published on Yahoo.
The gist of the article is that too much cruciferous veggies might not be so good for you after all. Tangentially, it mentions that too much fruit juice will rot your teeth, from way too much sugar.
But then there was this remark:
Why does it matter (indeed, why is it better ) to wait half an hour after eating or drinking before brushing your teeth? That’s one I haven’t heard before. And do fruit juices have much more sugar and acid that the fruit they’re made from, that they should rot your teeth worse?