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Dear Dr. Roach: I have weakness, numbness and the feeling of pins and needles in my hands, legs and feet. I have been diagnosed with both Sjogren’s syndrome and fibromyalgia.

Dear Dr. Roach: In January, I received a diagnosis of an abdominal aortic aneurysm measuring 2.9 centimetres. In April, another ultrasound showed that the abdominal aortic aneurysm measured 3.0 cm.

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Dear Dr. Roach: Are there any recognized benefits from taking either saw palmetto or glucosamine/chondroitin, both of which I have been taking — and paying for — for years. P.F.

Dear Dr. Roach: I read your recent column on prostate cancer treatments, and I must disagree on the differences between intensity-modulated radiation therapy and proton radiation therapy.

Dear Dr. Roach: I read your recent column regarding identical twins where one of the two was balding while his twin was not.

Dear Dr. Roach: I am a 76-year-old male who’s thinking of having fetal stem cell therapy for Parkinson’s disease. Please tell me your feelings and offer advice on this subject matter? S.C.

Dear Dr. Roach: How does a medical condition get named? Once named, can the name be changed (for example, Lou Gehrig’s disease, ALS)? I have a condition called hemiplegic migraines. It is rare and misunderstood.

Dear Dr. Roach: Can you send me a copy of your recommended low-carbohydrate diet? I have been trying to follow what I think it should be, but would like an expert to weigh in. K.H.

Dear Dr. Roach: I was diagnosed with nonalcoholic steatohepatitis and had very high AST and ALT numbers. I lost about 25 pounds, and the numbers were normal. As a result of other health issues, the weight came back and the numbers went up.