Health Dreams

We know from the scientific literature that dreams contain information about the dreamer's health, well-being and even illness. Dreams can reveal location of illness, type of illness, prognosis and treatment outcomes, to some degree. Of course not all health-related dreams are about health and dreams also contain images of character distortion and extreme imagery. Given this, how can a dreamer use dreams to track health and illness without getting afraid of every image that might be related to health? What are the key features of health dreams that should be attended to and what features should not?