Used to look at wars, violence, revolutions, and other forms of injustice and discrimination by explaining that there is a natural disparity in a society that causes these problems.
The answer is calories really sorry if it is wrong
ADD
OCD
Insomnia
Schizophrenia
Sensory anxiety
Social anxiety
Asthma
Dyslexia
Dyscalculia
Common cold
Flue
(Dude, there is a lot of health challenges mental and physical.)