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Dear Dr. Roach: For the past 50 years, I have been bothered by occasional indigestion or heartburn after eating a greasy or spicy meal. This might occur several times per month, but not more than once a week.

Dear Dr. Roach: I’m asking this question for my sister.

Dear Dr. Roach: In a recent column on screening tools, you made a brief statement about ovarian cancer. As a cancer survivor with metastasis to the ovary, I was hoping to have read something within the response on screening for ovarian cancer.

Dear Dr. Roach: Here’s something I've wondered about for a long time: Years ago, I was told that I lost five pints of blood in childbirth.

Dear Dr. Roach: I am an 84-year-old man in reasonably good health. I have taken blood pressure medicine for about 30 years. For the past six months, I have been taking trospium tablets to treat frequent urination.

Dear Dr. Roach: I am a 77-year-old man in reasonably good health. I am physically active and at normal weight.

Dear Dr. Roach: I have dealt with irritable bowel syndrome for more than 40 years. I have had less cramping and loose stools when I quit drinking milk. However, now over the past few years I have had mild constipation and very frequent bloating.

Dear Dr. Roach: I read that cow’s milk weakens the bones. Is that true? A.H. The preponderance of the evidence is that dairy intake — such as cow’s milk, yogurt and cheese — increases bone strength and reduces fracture risk.

Dear Dr. Roach: Is medical research shared? It seems that after all these years of battling various types of diseases and maladies, more progress should have been made than has been done.

Dear Dr. Roach: I just read an article that vaccinations are on the decline in many states. My question is about children who already have vaccinations.