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Dear Dr. Roach: In 2013, I complained to my internist about severe shaking in my legs and hands. He referred me to a neurologist, who diagnosed me with a rare disease: primary orthostatic tremor.

Dear Dr. Roach: I have blepharospasm (eye twitching, for those who have never heard of it). It’s terrible. I’m 58 and have had it for 10 years, but it has gotten worse as I’ve gotten older.

Dear Dr. Roach: Our 19-year-old son, who is 6 feet, 2 1/2 inches tall and weighs 130 pounds, wants to know if there’s anything that can decrease his metabolism. He has always been thin and very active, loves outdoor sports, running, hiking, surfing.

What should parents fear most when raising children? You could compile a list as long as your arm. While travelling in the U.S, I happened to read a column written by Bruce Feiler in the New York Times.

Dear Dr. Roach: I am a 77-year-old woman who has enjoyed good health. Several weeks ago, I fell off a stepstool while trimming a tree in the backyard, bruising the shin on my left leg.

Dear Dr. Roach: I am a 63-year-old woman. I have been treated for high cholesterol since I was in my 30s. My cholesterol levels are difficult to control, and as a result, I am closely monitored. My meds are adjusted accordingly.

What is one of the major health hazards today? It’s being a patient. Because there are so many pitfalls, and it’s easy to fall into them. Modern medicine has much more to offer today, which makes life better for millions of people.

Dear Dr. Roach: I am a 55-year-old woman. To date, I have had two bone scans — one around age 50 and the other quite recently. Both times, I was told that I have osteopenia.

Dear Dr. Roach: I had a radical prostatectomy in 2012 and two subsequent inguinal hernias. Due to having three surgeries in eight and a half months and the recovery from them, my desire for intimacy was very low.

Dear Dr. Roach: I am a 51-year-old male-to-female transgender woman. According to my doctor, I am in very good health, and my body has adapted to the traditional regimen of hormone replacement therapy quite well.