A high prolactin level may result from a pituitary tumor which is releasing too much prolactin. Pituitary tumors are actually fairly common. They are rarely cancerous, but they can cause problems either by over-producing a hormone such as prolactin, or by growing in size and pressing on surrounding structures.
Upon completion of an accredited program, nurse anesthetists must pass the National Certification Examination (NCE) to become a CRNA. This computer exam typically takes three hours. Each student must answer between 100 and 170 questions.
You need four years of college followed by four years of medical school, one year as an intern and three or four years in an anestheiology residency program. In total -- that is 12 years (though you get paid as an intern and resident). Chemistry would probably be a good major. It depends on what route you want to go. If you want to go the Med School route, it will take 8-10 years before you are registered to practice as an Anesthesiologist. The other route to go is to become an Registered Nurse, get your Bachelor of Science in Nursing, then go through a Master's Degree program to become a Certified Registered Nurse Anesthetist (CRNA.)