Poor Sleep Schedules Could Lead to Early Dementia, According to Texas Researchers

Researchers at Texas A&M found concerning links between unregulated sleep patterns and advanced cognitive aging. Essentially, the worse your sleep schedule is, the higher your risk is of developing dementia or Alzheimer's disease.

Dementia vs. Alzheimer's: What's The Difference?

Before we continue, let's clarify what dementia actually is and how it differs from Alzheimer's. First, dementia is NOT a natural part of aging. It's a result of damaged brain cells that gradually get worse and worse over time, affecting how one communicates and acts.

Alzheimer's is a specific—and the most common—disease that causes dementia. People with Alzheimer's (typically over the age of 65), lose the ability to learn new things early on. This is because the disease usually targets cells in the part of the brain responsible for learning first.

Does Poor Sleep Give You Alzheimer's?

According to Texas A&M researchers, about 55 million people worldwide suffer from dementia, with 7.2 million cases in the U.S. alone. In response to this discovery, tests were done on animals to study how the brain's immune system is affected when sleep cycles are out of rhythm.

What they found was that disrupted sleep cycles led to changes in microglia—immune cells in our brains that regulate inflammation.

Normal microglia have branched, tree-like structures that help protect the brain, but the poor sleep and disrupted circadian rhythm led to visible changes. During these states of high stress, microglia were observed to take abnormal shapes, meaning they may be failing to function properly.

It's thought that when this happens, damaged cells and other debris in the brain can build up after not properly being filtered, leading to early development of dementia symptoms.

So, What Do We Do Now?

The way that Texas A&M researchers are addressing this is by using stem cells to create nano-sized particles that are released into the brain. These particles then interact with the microglia, preventing them from changing shape and return to their jobs of regulating inflammation in the brain.

This is fascinating stuff! I'm curious to know where this is going to lead us when it comes to dementia care and prevention. Only time will tell.