Do low or high blood serotonin level in children affect their bone growth? To what extent it's effect?

Under investigation. I've heard little since 2011 but it's true that hi levels played a role in suppressing bone growth. There was a NYTimes piece: http://www. Nytimes. Com/2008/11/27/health/research/27bone. Html and http://www. Ncbi. Nlm. Nih. Gov/pmc/articles/PMC2940494/ Other systems ae involved too. It's not candy!