[9x39]

Well, not assigned by the hospital or your parents, but being a DNA-based lifeform a genetic baseline is a safe assumption. Experiences vary after that:

https://pmc.ncbi.nlm.nih.gov/articles/PMC3052625/

[s1artibartfast]

I think there is much stronger evidence that it is metabolic damage from overconsumption in an earlier stage in life.

Not unlike if you shatter your legs, your recovery may be long and incomplete.