The cortisol and ACTH detective

A doctor measures the cortisol and ACTH of a patient. Each is given as a share of the normal level: 1.0 is normal, below 0.7 is low and above 1.3 is high. You will turn the two numbers into a diagnosis.

The idea. Cortisol switches ACTH down. A low cortisol with a high ACTH points to the adrenal gland. A high cortisol with a low ACTH points to a source of cortisol that ignores the loop.

Your tasks.

1. Finish level. It gives "low", "normal" or "high".
2. Finish diagnose. Use the levels of cortisol and ACTH to give the answer from the table below the function.
3. Finish count_addison. It counts how many patients in a list have Addison's disease.