I don't know about your nutrient bed hypothesis, but I had hairline FUE to areas where there was no hair before (dracula hairline correction). I'll be honest, I think you are worrying a bit too much. Mt doc. gives a special blend of minox and other goodies blended in by an apothacary, and whatever it is, this stuff causes hair to grow. Of course, my doc is the top surgeon, so of course i knew it would grow.