Dementia Risk and Traffic: What You Need to Know About the Secret Link

Could there really be a link between dementia risk and traffic noise? Well, according to a study in 2021, that might be the case. Today, more than 55 million people suffer from dementia, and according to the World Health Organization (WHO) there will be 150 million by 2050. Out of all these people, the BJM found that people who live close to loud transportation routes, like highways and main roads, appear to have an elevated risk of dementia.  

Dementia Risk and Traffic Noise

Risk Factors for Dementia

Numerous studies have consistently linked traffic noise with various health problems, such as:

• Obesity
• Diabetes
• Heart disease
• Dementia

There is very little we know about this link, which calls for doctors and scientists to conduct more controlled testing on the subject. Transportation noise pollution is the second-worst environmental risk factor for public health in Europe.

Effects of Traffic Noise on Sleep

Being exposed to high levels of noise at night is cause for concern considering sleep is crucial for mental and cognitive function. Some studies suggest that the fragmented sleep created by traffic noise disturbances at night increased stress, escalated systemic inflammation, and caused changes in the immune system.

Reducing the Negative Effects of Traffic Noise

The authors of the study suggest that noise-reducing measures could help prevent memory loss related to noise pollution. Though it should be noted that this study was only observational and will require further research to be conclusive. 

If you are losing sleep due to traffic noise, try:

• Changing your windows
• Sealing gaps in windows
• Adding acoustical panels

If you fear you may be at risk for noise-related dementia, be sure to consult your doctor about your changes in cognition.

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