Dr. T. Glenn Pait with UAMS answers viewer questions on everything from popping knees to the safety of the Kava-Kava herb.

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UNDATED (KTHV) - Dr. T. Glenn Pait with UAMS answers viewer questions on everything from popping knees to the safety of the Kava-Kava herb.

These are the questions he covered:

-I'm a 40 year-old woman and I've noticed for the first time my nails have vertical ridges. Is this something I should call my doctor about? I'm worried.

-Vitamin D seems to be good for everything. I have asthma. Should I take extra Vitamin D for my asthma, will it help?

-I exercise regularly and consider myself to be reasonably fit. Some days when I go to the gym and work out really hard, I feel very good when I leave. The next day my muscles are sore and even painful. Is this normal and do you have any recommendations or suggestions?

-My husband and I are traveling to Central America this summer. Friends who've been there said we will get Traveler's Diarrhea. We're wondering if you had any recommendations on how to avoid traveler's diarrhea.

-I've had a sore throat since the beginning of the year, which makes it sometimes difficult to swallow and I also have a lump I can feel in my neck. Is there anything you can recommend for my sore throat? I think I have an infection and antibiotics will clear things up. What antibiotic would you recommend?

-My knees are always popping every time I kneel down. I don't have any pain in my knees and was wondering if the popping noises are an indication of early arthritis. If so, do I need to start taking any arthritis medications now?

-My husband takes Kava-Kava. He uses it for anxiety and says it helps him to rest better at night. It was recommended by a friend at work. Does this Kava-Kava herb really work and do you recommend it in his case?

-My boyfriend and I were wondering, can you get skin cancer "where the sun don't shine"?

-I'm thinking about buying a blood pressure unit to use at home. How would you choose the best monitor? My friend told me to ask a doctor, so 1. I'm asking you, Dr. Pait. I won't buy one 'til I hear from you, so please answer my question soon.

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