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HONOLULU 鈥� As the Zika outbreak takes hold in Latin America, researchers thousands of miles away in Hawaii are using data to figure out where it might spread next.

Dear Dr. Roach: My mother is in her mid-60s and was diagnosed with osteoarthritis of the thumb last year. She is in good health.

Hippocrates, the father of medicine, may be rolling over in his grave. Why? He preached: 鈥淔irst, do no harm.鈥� I recently read a report in the Journal of Molecular Medicine called Death by Medicine.

Dear Dr. Roach: I hope you will offer your opinion on my experience with opiate medication. My wife is now on a combination of morphine pills to address chronic shoulder pain resulting from a fall.

Faster way to detect head trauma moves closer to reality

Dear Dr. Roach: I am 67 years old and in good health. I had some thyroid tests that showed a mildly high TSH (6.7), but normal T3, T4 and free thyroxine index.

Dear Dr. Roach: I read your column faithfully, but I can鈥檛 recall you ever addressing urinary incontinence in women. As it鈥檚 a subject that鈥檚 not normally addressed socially, I wonder if you can tell us what can be done about it. O.P.

How should people decide whether or not to have a colonoscopy? New guidelines for this procedure have recently been published in The Canadian Medical Association Journal. It reports that some people have a choice. Others have no choice.

Dear Dr. Roach: I鈥檓 a 69-year-old woman with hypothyroidism. Although my thyroid-stimulating hormone score is in the high-normal range, a new doctor recently increased my dosage of levothyroxine just slightly because of fatigue, joint aches and more.

Dear Dr. Roach: I am a healthy 90-year-old woman. I enjoy playing tennis and bridge. A week ago, I started to take the drug metformin. I do not have diabetes. The reason for taking it is that I read an article about it by an expert in longevity.