Alzheimer’s disease is one of the most pressing health concerns in aging populations, affecting nearly 7 million Americans ages 65 and older. While there’s no cure (yet) for this unfortunate disease, there are preventative steps you can take to reduce your risk — and one of the simplest might be found in your nightly routine. Emerging research highlights the surprising connection between oral health and cognitive decline, suggesting that maintaining proper dental hygiene, especially flossing, could play a significant role in protecting your brain.
Here’s why paying attention to your dental health should be an essential part of your dementia prevention plan.
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The Link Between Poor Oral Health & Cognitive Decline
Your mouth is home to trillions of bacteria — some helpful, others harmful. When oral hygiene is poor, harmful bacteria multiply, increasing the risk for gum disease, also known as periodontitis. This condition not only damages the gums and teeth but can also have systemic effects, as harmful bacteria and their byproducts enter the bloodstream. Research shows that these bacteria, particularly Porphyromonas gingivalis, are capable of traveling to the brain, where they release toxic enzymes that may damage neurons and contribute to the formation of beta-amyloid plaques — a hallmark of Alzheimer’s disease. In fact, in a groundbreaking study published in Science Advances, researchers detected P. gingivalis, a key bacteria in gum disease, in the brains of people with Alzheimer’s.
Beyond the direct bacterial impact, poor oral hygiene has been shown to trigger chronic inflammation throughout the body, another factor linked to a higher risk of Alzheimer’s, as it exacerbates neurodegenerative processes.
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Why Flossing is Critical
Prevents Bacterial Spread
When it comes to protecting against cognitive decline through oral hygiene, one habit stands out: flossing. According to the American Dental Association, individuals who incorporate flossing into their routine are significantly less likely to experience gum disease, which may indirectly protect their cognitive health. While brushing cleans the surfaces of your teeth, flossing targets the spaces between them, where harmful bacteria and food particles tend to accumulate. Of course, both are important daily practices. However, without regular flossing, harmful bacteria are more likely to form plaque and lead to gum disease. The good news is that by flossing consistently, the bacterial colonies that could otherwise inflame your gums and enter your bloodstream are less likely to form, thereby helping to prevent bacteria from spreading beyond the mouth to the rest of the body.
Reduces Inflammation
Flossing helps prevent gum inflammation, which, if left unchecked, can progress to chronic gum disease. This condition triggers the release of inflammatory markers, such as C-reactive protein (CRP) and interleukin-6 (IL-6), which have been linked to an increased risk of Alzheimer’s disease. Chronic inflammation not only damages oral tissues but also contributes to systemic inflammation, a key driver of neurodegenerative diseases. By reducing inflammation at its source—your gums—flossing may help lower these harmful markers and support brain health.
Reduces Risk of Systemic Infections
By preventing the buildup of harmful bacteria in the mouth and reducing the risk of gum infections, flossing can help prevent systemic infections, such as endocarditis. These infections not only strain the immune system but can also create a pro-inflammatory state in the body, which has been linked to an increased risk of Alzheimer’s disease.
How to Make Flossing a Consistent Habit
Consistency is key when it comes to flossing. Here are some tips to incorporate this habit into your routine:
Set a Reminder
Establishing a specific time to floss each day, such as right after dinner or before bed, creates consistency and helps make it part of your routine. If you’re struggling to commit to this habit, try using an alarm or app to help remind you!
Use Floss Picks
If traditional flossing is challenging, consider floss picks or dental brushes to help make the process easier.
Pair Flossing with Another Evening Habit
If flossing feels like a daunting task, try performing it while watching your favorite show or listening to a podcast to make it more enjoyable.
A Simple Habit For Brain Health
Flossing might seem like a small task, but its implications for brain health are profound. Backed by current research, maintaining your oral hygiene is a powerful way to not only protect your teeth and gums, but also support your cognitive health and reduce your risk of cognitive decline. The best part? You can get started tonight! It just takes an extra minute or two.
