Because underdeveloped means that something is not the best it could be its not fully developed yet like a person's health isn't full developed hoped it helped.
Dimension of health cover one's physical and mental wellness.
According to study, premature death's not only cause by physical illness ( diabetes, liver disease, heart disease) , but could also caused by psychological distress ( such as stress, uncontrolled anger which could lead to heart attack , and depression that could lead to suicide attempt)
