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Many years ago I wrote: “The problem with laparoscopic (keyhole) surgery is it leaves the impression that tiny incisions mean a simple, uncomplicated way to perform an operation.

Dear Dr. Roach: For teens, does wearing headphones with music playing while sleeping affect the quality of their sleep? Also, does listening to music while studying impact the quality of studying? S.W.

Dear Dr. Roach: I have had many urinary infections. My daughter-in-law told me to eat some yogurt every day to see if that would help. I haven’t had a bladder infection since. I hope this will help other women with this condition. L.E.P.

Dear Dr. Roach: I am a 72-year-old female in reasonably good health. I have an embarrassing problem that no one has been able to diagnose or treat. Within 15-45 minutes of eating, I have urgent, explosive bowel movements.

There’s no such thing as surprise-free or risk-free surgery. To get an update about cataract surgery, I interviewed Dr.

Dear Dr. Roach: What can you tell me about myasthenia gravis? I’d like to know how it’s contracted, and what the treatment options are. Y.H. Myasthenia gravis is a disease of the connection between nerve and muscle.

Dear Dr. Roach: As a 67-year-old male in good health, should I be concerned about a (fasting) A1C of 5.9 per cent? This is the first time I have had this test run. I am 5 feet, 4 inches tall and weigh 122 pounds.

Dear Dr. Roach: Two months ago, my husband fell down a flight of stairs and fractured six ribs and a vertebra in his neck. He is 65 years old and was in good health before this accident.

Dear Dr. Roach: In a recent column, you discussed an antihistamine and montelukast for allergies. We use pure essential oil. Lavender is better than drugs. J.O.S.

Have you ever wondered what you’re swimming in when someone invites you to a pool party? I’ve always found it hard to turn down these weekend soirées.