The self is responsible for the good health functioning ~ no one else is responsible for it. Illness ~ (dis-ease) is not necessary.
It is usually caused by neglect or may be poor nutrition, insufficient drinking water, stress, not enough rest, drinking alcohol to excess, drugs, smoking etc.
BUT work does not cause any STRESS.
Stress is reaction to the conditions prevailing. It depends on an individual either to react in a stressful way or not, up to an individual outcome!
One has to keep medicines to a minimum by keeping yourself in good health in the first place. PREVENTION IS MUCH BETTER THAN CURE! The main causes of ill-health are nutritional, lifestyle or environment related. One may change in routine life style by adding or additive inverse to have good health!