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Fads in clothing come and go. Women鈥檚 skirts go up and then get longer. Men鈥檚 pants get wide and then narrower. Fads also occur in medicine. In the 1980s, it was 鈥渓ow fat鈥� for packaged foods and weight-loss diets.

Dear Dr. Roach: Will you write about orthostatic hypotension? I鈥檝e been told I have this disorder. I鈥檓 a retired 86-year-old man in fairly good medical shape. I want to regain my regular activities. My regular doctor put me on labetalol.

Dear Dr. Roach: Several years ago, I started going to a new doctor, who said that the way to get the correct cholesterol number is to divide the HDL into the LDL, and if the answer is not 2.

Dear Dr. Roach: I read your response to the 67-year-old woman whose insurance wanted her to have a routine urinalysis, which you felt was unnecessary.

Dear Dr. Roach: I鈥檓 a 76-year-old male with a heart condition. I had a double bypass 11 years ago and a stent put in two years ago. Apparently, I鈥檓 allergic to statins.

Dear Dr. Roach: I am a 61-year-old woman who has lost most of her sexual drive. My OB/GYN has suggested bioidentical hormone replacement therapy. My online research did not do much to enlighten me. The cost is pretty high.

Dear Dr. Roach: I am fair-skinned and have had sunburns in the past, so I have been diligent about looking for rough, scaly skin patches that might turn into cancer and dark irregular patches that might be melanoma.

I lost track of the number of times I was called by hospital emergency to tell me my elderly mother had fallen again. Now, a study shows that atrial fibrillation, referred to as A Fib, an irregular heart rate, is often the cause of falling.

Dear Dr. Roach: My husband had prostate cancer in 2013. He was treated with radiation, and was thought to be cured. Well, one year later, he found out he had cancer in his liver. He lived eight months before going into hospice for his last 15 days.

Dear Dr. Roach: I have arthritis in my hands and knees. For at least three years, I took ibuprofen (about 1,200 mg daily). Then two years ago, I switched to a natural health-care product derived from turmeric.