What is Health? Optimal function Not merely absence of sign or symptoms How do you know? What controls the function of the body? What is Health? Optimal function Not merely absence of sign or symptoms How do you know? What controls the function of the body? What is Health? Optimal function Not merely absence of sign or symptoms How do you know? What controls the function of the body? What is Health? Optimal function Not merely absence of sign or symptoms How do you know? What controls the function of the body?