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Dear Dr. Roach: I just read another sad story about a woman who had breast cancer, fought it and seemed to win, but after five years, it came back and took her life. The same sequence of events happened to my wife two years ago.

Dear Dr. Roach: My neighbour is battling cancer for the third time. The medical personnel she sees when she goes for her chemotherapy treatments are urging her to get rid of her two cats. They claim the cats are a danger to her health.

Dear Dr. Roach: I had an abdominal X-ray to check on my gallstones, and was surprised to find an enlarged spleen. I was told it might be leukemia or lymphoma.

Dear Dr. Roach: How much mercury is safe? A.C.

Dear Dr. Roach: Apparently, it is common for older people to have balance issues. Do these balance problems usually stem more from muscular issues or inner-ear issues? E.M.

Polymyalgia rheumatica is more likely; upper arm, shoulder pains are symptoms

Dear Dr. Roach: I recently read that a large percentage of orthopedic injury to the elderly is directly related to their falling while walking large animals, specifically dogs more than 20 pounds. Can you shed light on this, please? M.F.

Dear Dr. Roach: A friend was given a test to see how long food stayed in her stomach after eating. She was told that it stayed only a short time before continuing its journey, a much shorter time than the average person.

Dear Dr. Roach: I am a 65-year-old woman who was recently diagnosed with iron deficiency and sent to a hematologist for two sessions of iron infusion.

Dear Dr. Roach: My wife has been diagnosed with atrial fibrillation. Doctors tried an electrical cardioversion, but it came back after a few days. She is taking metoprolol and Eliquis.