Last Easter while my children were sorting through their baskets of chocolate eggs and jelly beans, my son looked up from the table and asked a simple question:

“Why don’t Grandma and Grandpa eat candy like we do?”

It was the kind of question children ask without really thinking. To him, it seemed obvious: Candy is delicious, so why wouldn’t everyone want it?

From a child’s perspective, it can look like older adults simply lose their taste for sweets. But as a speech-language pathologist who studies swallowing disorders, I know the explanation is often more complicated. In many cases, the issue has less to do with liking candy and more to do with something most people rarely have to think about: swallowing.

Swallowing is more complex than most people realize

You hardly notice the act of swallowing. It happens automatically every time we eat or drink. But swallowing is actually a remarkably complex process. More than 30 muscles and several nerves coordinate to move food from the mouth through the throat and into the esophagus while briefly protecting the airway.

One way to think about swallowing is like a carefully timed relay race. Each group of muscles passes food along to the next step at exactly the right moment, while the airway briefly closes to keep food from entering the lungs.

When everything works smoothly, it takes only a second or two.

As people age, some parts of this process can change. Chewing muscles may lose a........

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