Lynda has been losing weight and just doesn't look well. You ask her if she is ill, and she confides that she has an ongoing problem with diarrhea and abdominal cramping. Her family practitioner found no major problems and told her to try over-the-counter anti-diarrheal medicine. She is thinking about seeing a specialist, but she is not sure which type of specialist she needs. Which of the following healthcare professionals would you recommend?
a. Gastroenterologist.
b. Cardiologist.
c. Endocrinologist.
d. Dermatologist.