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Dear Dr. Roach: I am a patient with myelofibrosis, and have been under treatment for over three years.

Researchers recommend people be tested based on their age — not just possible risk factors

Dear Dr. Roach: I am asking for a restatement/clarification of your position on flu shots for those who have had autoimmune disorders. I am a 69-year-old male who suffered an attack of Guillain-Barre syndrome in 1973.

How would you react if you saw people dumping 800,000 gallons of formaldehyde, a carcinogenic substance, into the earth every year? Then witness them cutting down four million acres of forests annually? I suspect the environmentalists who fight under

Dear Dr. Roach: I am a 62-year-old woman in excellent health. I eat right, exercise and have a great genetic history. I have no high blood pressure.

Dear Dr. Roach: I am a man in my late 50s. I now am told to sleep on my right side and not my left side, because it’s better for the heart. However, my sinuses seem to open up and it’s easier to breathe lying on my left side.

Dear Dr. Roach: I have been reading a lot about the cardiovascular and general health benefits of supplemental vitamin C and lysine given that human beings are the only animal that does not produce vitamin C.

Do large doses of vitamin C increase the risk of kidney stones? It’s a question I’m often asked, having reported the medical value of vitamin C in decreasing the risk of cardiovascular disease.

Dear Dr. Roach: Something’s been puzzling me. I’m a 71-year-old woman, and my cholesterol tends to hover around the 240 mark.

Dear Dr. Roach: Last April, I had back surgery to enlarge the disc openings.