Poor condition of mind or body. Cause by poor diet, lack of exercise, pollution/poisoning, physical strain, injury, stress, lack of mental simulation, lack purpose, lack of pleasure etc. Both physical and mental health can be affect by all aspects of the physical environment and are strongly interlinked. Mental well-being is strongly affected by personal relationships. Leads to reduced productivity. Ill health can become a downward spiral if not dealt with, and can eventually lead to death.