Eating grass

[Sirius]

I am not fixated on any one thing, rather I'm looking at scientific explanations relating to cravings and/or health conditions.

The rest looks like woo woo to me.

Your not doing the scientific method, you are disproving not proving. Do you think this is what scientists do, sit there and disprove things?  They work their asses off to try and prove a theory and build something and get paid mega bucks for it.

Looking like woo woo is exactly the point. How do you hide things?