One thing they're looking at specifically is a relation between type 2 diabetes and a gene that determines one's sensitivity to bitter taste. (I assume that's the one where supertasters hate broccoli.) Several plants affect cancer. Wolfberry, a Chinese fruit, affects vision.
I have two reactions to this:
- It's another example of how cool science makes our lives better
- No way I'm going to follow any diet that doesn't involve food that tastes good to me. If I can saute it in bacon fat, I'll eat it.