Physical health refers to the integrity of physical function, without physiological diseases. Mental health is the stability of mental thinking state, without mental illness.
The World Health Organization defines health as physical health (physical health), mental health and good social adaptability. It can be seen that the two are completely different fields. Physical health is not necessarily mental health, for example, most patients with depression are normal; And the body is not healthy, it is not necessarily unhealthy. For example, many patients with cancer and leukemia are also very active in their lives. On the contrary, many people with serious mental illness, such as celebrities who committed suicide, are in good health.
So there is not much connection between the two.
In life, people often talk about "physical and mental connection". "Body" and "mind" here mean that physical state and psychological state will influence each other. For example, if a person is sick and hurts, he is unlikely to be happy. But unhappiness is not a mental illness, but a mental state.
It is easy to distinguish basic concepts, whether they are related, whether they have influence and how they are related.