Q: I'm 48-years old and have suddenly started suffering from lactose intolerance. The list of foods I can eat is shrinking by the day. Do you think I might have a serious problem in my digestive system? Should I go for intensive testing?

Q: My daughter thinks she may have an ulcer. While waiting for her doctor’s appointment, we wanted to know what foods and medications to avoid.

Q. I thought that cycling was safe since it’s a low-impact activity. But after every spinning class I take, my lower back hurts. What am I doing wrong?

Q: I'm addicted to exercise. I have trouble sleeping that night, worrying about how much weight I might have gained by not exercising that day. The rest of my family is obese, and I'm determined not to look like them. It seems like I have no life outside of work and the gym.