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Dear Dr. Roach: My running friends and I are in our mid-70s (with a couple of 80-plus guys), and we continue to run, albeit at a much-reduced pace. All of us have been running for about 40 years and used to be pretty good marathoners/10K racers.

Dear Dr. Roach: I am an 85-year-old woman. I had a stent placed in my heart artery in 2008, and I have been well since then. I have been on statins for many years. My present dose is 20 mg of Crestor daily.

Dear Dr. Roach: My husband and I are taking a cruise around South America that includes several stops in Brazil. We both are 72 and in good health.

Could hydrogen sulfide (H2S), the gas that causes the odour of farts, ever be the reason behind a Nobel Prize in Medicine? Dr.

Dear Dr. Roach: I have read online and in our local newspaper that doctors are no longer recommending metformin as a treatment for Type 2 diabetes. Can you please explain why metformin is no longer being prescribed? P.K.

Dear Dr. Roach: I am a white male, 70 years old, over six feet tall and weigh 140 pounds. I am healthy except for lymphocytic colitis, which is under control with Imodium.

Dear Dr. Roach: I think I may have polymyositis. My thigh muscles (specifically, the lateral muscles) are weak and achy. I take a statin, and I don’t like what I read about them. L.P.

How honest is medical news? Of course, everyone knows that consuming stupid amounts of alcohol is unhealthy. But puritans and some doctors can’t accept the proven fact that moderate amounts of alcohol can prolong life.

Dear Dr. Roach: I’m 60. Pretty much 100 per cent of the people I know, both older and younger, who have had stents installed, had a heart attack FIRST, before getting stents.

Dear Dr. Roach: I am a fit and healthy 60-year-old man. Recently I was troubled by a series of escalating symptoms: I occasionally got a bit of hoarseness, then I seemed to lose some capacity in my lungs.