Please note: The following questions were submitted by readers. The answers are intended for your general information and should not replace a doctor’s medical advice.

Q. Is it better for your health to eat fresh fish or canned?

Please note: The following questions were submitted by readers. The answers are intended for your general information and should not replace a doctor’s medical advice.

Please note: The following questions were submitted by readers. The answers are intended for your general information and should not replace a doctor’s medical advice.

Please note: The following questions were submitted by readers. The answers are intended for your general information and should not replace a doctor’s medical advice.

Q. Does tai chi have any other health benefits besides improving balance? 

Q. What are the early signs of kidney failure?

Q. I have the dry version of macular degeneration. Are there any new treatments available?

Q. Why is it dangerous for older adults to take certain pain medicines such as ibuprofen?

Q. Your Lyme disease article in the June 2016 edition didn’t mention a tick removal system called Rid-a-Tick, which uses tape instead of tweezers. Is this a better way to remove ticks?

Please note: The following questions were submitted by readers. The answers are intended for your general information and should not replace a doctor’s medical advice.

Q. Is nicotine gum harmful? I chew a lot of it because I’m afraid I’ll start smoking again. 

Q. I’ve always had strong, healthy teeth, but now I seem to have cavities much more often. Is there a reason?

Q. As I get older, I notice there are more floaters in my eyes. Can they be harmful?

Q. It’s been over a year since her sister died, but my wife still seems sad. She doesn’t go out of the house very much, and is tired all the time. Is she still grieving or is this something more serious?