Most of us have only had GPS for about ten years. Now everyone uses it to get everywhere, especially young people. And that might not be a good thing.

David Barrie is the author of a new book called "Incredible Journeys" that focuses on how different animals navigate, and he thinks using GPS too much could up your chances for things like Alzheimer's disease.

One of the first signs of Alzheimer's is feeling disoriented, and it's because your hippocampus starts to shrink. That's the part of the brain that helps you navigate and remember directions.

And it can happen even faster if you don't exercise that part of your brain enough.

In other words, when you always use GPS, you don’t have to remember how to get places. And the part of your brain that helps you get from point A to point B can shrink because of it.

At this point, it's just a theory. And more research needs to be done. But you might want to turn your GPS off sometimes, just in case. And maybe try to remember how to get places every once in a while.

Read more at The Telegraph.

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