The factor that causes a noninfictious disease is the environment.
The answer is Ultraviolet Light
The easiest way for us to obtain a sustainable amount of Vitamin D is by exposing our self to morning sunlight ( which contain ultraviolet light)
Often time, we don't consume enough vitamin D and our body need to get it from our bones, and in order to do that, it need to be activated through enough exposure from sunlght
It mean poor, not good, bad.
Answer:
he suffered from SCID/severe combined immunodeficiency.
hope this helps! :)
