This Common Problem Sends Alzheimer’s Risk Soaring

Growing older brings many gifts—wisdom from experience, deeper relationships, the joy of grandchildren, and a confidence that comes from knowing who you are.

But it also brings challenges we’d rather not face.

The older you get, the higher your risk of developing Alzheimer’s grows.

The good news is that you can do something about it.

A recent study confirms that a common lifestyle problem sends Alzheimer’s risk soaring.

And you—or someone you love—is likely to get caught in the crosshairs, since about half of older adults face this issue.

A review of 14 studies revealed something startling about sleep Alzheimer’s.

Poor sleep significantly increases your risk of this memory thief. In fact, sleep disruptions across the board are bad for brain health.

The researchers found that…

• Spending less time in REM (rapid-eye movement) sleep is linked to cognitive decline and new-onset dementia. During REM, brain activity increases as your memories are consolidated and emotions are processed.
• Fragmented sleep—or frequently waking during the night—was also associated with cognitive decline and new-onset dementia.
• Severe obstructive sleep apnea—in which breathing repeatedly stops during sleep—increased the risk of neurodegeneration and was “robustly” linked to the progression of Alzheimer’s .

The studies revealed two key connections between sleep and brain decline:

1. An impaired glymphatic system
2. The accumulation of beta-amyloid plaques

You see, your brain’s glymphatic system is like a trash removal service that collects damaged proteins (like beta-amyloid and tau proteins), neurotoxins, and other metabolic waste products from your body.

It’s a wonderfully effective system—but there’s a catch. Your brain activates it ONLY during sleep. And it’s most active during the deepest stages of sleep.

Disrupted sleep prevents the glymphatic system from doing its job, allowing brain-damaging toxins to build up.

This glymphatic glitch is precisely why earlier research found that not spending enough time in the two deep stages of sleep leads to cognitive deterioration and increased Alzheimer’s risk.

Knowing why this happens gives us a huge advantage. It means you can take action now to reduce your Alzheimer’s risk—and it starts by prioritizing the quality and quantity of your sleep.

Here are three simple steps to get you on the right track:

1. Expose your eyes to direct sunlight at sunrise to help set your circadian rhythm and trigger your body to produce ample amounts of the sleep hormone melatonin.
2. Go to sleep at the same time every night, and don’t take any electronic devices to bed.
3. Make sure you’re sleeping in a cool, completely dark room.

While we can’t stop the aging process, we can take meaningful steps to protect our brain health. When you prioritize quality sleep starting tonight, you’re not just improving your rest—you’re actively working to preserve your memories, independence, and future.

P.S. Discover the “YMCA Method” that’s saving seniors’ memories.

View Sources

Hassan Mohmmed Ahmed A, Emam Mohamed Ahmed N, Abdulwahid Elsamany A, et al. (June 20, 2025) The Role of Sleep Disturbances in Alzheimer’s Disease Progression: A Systematic Review. Cureus 17(6): e86450. doi:10.7759/cureus.86450