Ask questions about not only the symptoms bothering you, but also general health topics such as weight, mental health, exercise and diet. When the doctor runs regular tests such as checking cholesterol or thyroid levels, ask her what your results mean and how they might impact your health. If she prescribes medication, ask if it's really necessary. Be sure to inquire about side effects, drug and alcohol interactions, how long you should take the medicine, and whether or not your insurance covers the medicine. Taking an active role in your health and opening up an honest dialogue with your doctor can prevent health problems down the road.