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Shingles is the term we use to describe a condition that is caused by a re-activation of the Herpes Varicella-Zoster virus. The origin of this infection usually goes way back to childhood with a disease we know as chickenpox.

When you have a chickenpox infection, your immune system manages to eventually suppress that virus from causing an active infection, but the virus does not get completely eliminated from your body--it is able to go and hide in your nerve roots.

Your immune system manages...

Will reading glasses make your eyes worse? The short answer is "No."

Although we don’t know the exact mechanism by which humans lose the ability to focus up close as we age (a process called presbyopia), the fact remains that it happens to almost all of us.

The leading theory of how this occurs is that the lenses in our eyes get stiffer and thicker as we age--one of the muscles in the eye that contracts to change the shape of the lens does so less and less effectively because the lens itself...