Health is the ability of a biological system to acquire, convert, allocate, distribute, and utilize energy sustainably. The World Health Organization (WHO) defined human health in a broader sense in its 1948 constitution as "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity."[1][2] This definition has been subject to controversy, in particular as lacking operational value, the ambiguity in developing cohesive health strategies and because
