Connect with us

Science

Scientists Link Air Pollution to a Higher Dementia Risk

Apart from being recognized as an established risk factor for stroke and respiratory disease, air pollution might be associated with a heightened risk of developing neurodegenerative diseases such as dementia, as scientists say. A London-based study that involved 131,000 patients established associations that couldn’t be explained by known factors that influence the risks of developing the condition.

Pollution estimates vs. sample

The researchers used carefully calculated estimates of air and noise pollution levels across the Greater London area, looking for potential links to new dementia diagnoses. In order to do this, they focused on anonymous patient health records stored at the Clinical Practice Research Datalink (CPRD). This research service that operates within the UK Department of Health has been collecting data from participating general practices in the UK since 1987. The research focused on about 131,000 patients aged 50 to 79 in 2004 who hadn’t been diagnosed with dementia, registered at 75 general practices within the London orbital M25 motorway.

Research procedure

Through validating modelling methods, validated with recorded measurements and the patients’ residential postcodes, the researchers were able to estimate not only their yearly exposure to air pollutants, especially nitrogen dioxide (NO2), fine particulate matter (PM2.5) and ozone (O3), but also their proximity to traffic and road noise. Then they tracked the health of these patients for an average of 7 years, until a diagnosis of dementia, deregistration from the practice or death, whichever occurred first. During the monitored period, 1.7% of the participants were diagnosed with dementia.

Unexplained by known risk factors

These diagnoses, including the Alzheimer’s disease, were associated with ambient levels of NO2 and PM2.5 that were measured at the patients’ homes at the start of the monitoring period in 2004. What is more, these associations were consistent and unexplained by known risk factors like smoking and diabetes. Still, when restricted to specific types of dementia, they lingered only for the participants diagnosed with Alzheimer’s disease. The patients living in the top fifth of NO2 levels had a 40 percent heightened risk of being diagnosed with dementia than those living in the bottom fifth.

A possible alternative

Perhaps a more elaborate study is needed, one which would include people provided with individualised dementia care. These programs include highly trained staff and 24-hour clinical support that provide security, stability and peace of mind to both the residents and their families. Apart from in-depth patient knowledge and leading staff to resident ratios, these programs capitalise on light-filled spaces, calming palettes of blues and greens and private gardens which offer a safe connection to the outdoors.

Potential for additional research

While an increase in risk similar to NO2 levels was observed for higher PM2.5 levels as well, researchers agree that this is an observational study, and as such, has difficulties establishing the cause, with the findings applicable to London only. The researchers also missed the opportunity to single out long-term exposures, which may be relevant for Alzheimer’s disease which often takes many years to develop. However, they suggest that traffic-related pollution has been linked to slower cognitive development in young children, and continued exposure to neuroinflammation and altered brain immune system.

The development of dementia involves many factors, but the exact cause of the condition is still unknown. And while researchers point out several plausible pathways for air pollutants to reach the brain, no one has explained how they might contribute to neurodegeneration. Even if the impact of air pollution was relatively modest, public health would gain much if reducing the exposure to it may delay the onset of dementia.

Continue Reading

Recent Posts

What Are The Better Ways Of Building Data Lakes? : The Right Way Is Critical What Are The Better Ways Of Building Data Lakes? : The Right Way Is Critical
Tech2 days ago

What Are The Better Ways Of Building Data Lakes? : The Right Way Is Critical

The pattern is the main period that each enterprise needs to be conscious of if they need to generate greater...

Everything You Need to Think About Before The Road Trip Everything You Need to Think About Before The Road Trip
Autos1 week ago

Everything You Need to Think About Before The Road Trip

Road trips are perhaps the most flexible vacation format: they can be as long or fast, intense or relaxed, planned...

Justice Law In Rural Area: Keep Community Feels Secure Justice Law In Rural Area: Keep Community Feels Secure
Law2 weeks ago

Justice Law In Rural Area: Keep Community Feels Secure

In order to strive and keep on progressing forward, the judiciary system plays an important role in instituting trust within...

Get The Best Of Dynamics 365 CRM With Inogic Productivity Suite Now! Get The Best Of Dynamics 365 CRM With Inogic Productivity Suite Now!
Tech1 month ago

Get The Best Of Dynamics 365 CRM With Inogic Productivity Suite Now!

Finally, at the end of 2020, it’s here. When we started an unexpected lockdown, we were all able to pause,...

How to Combine Traditional and Modern Furniture With Style How to Combine Traditional and Modern Furniture With Style
Home Improvement1 month ago

How to Combine Traditional and Modern Furniture With Style

Are you in love with both traditional and modern furniture styles? Do you feel like you can’t decide between those...

Must-Have Womens Weekend Away Accessories Must-Have Womens Weekend Away Accessories
Travel1 month ago

Must-Have Womens Weekend Away Accessories

If you’re planning a weekend away, there are a few essentials that will keep you looking stylish whilst also being...

How to Organize Your Garage How to Organize Your Garage
Autos2 months ago

How to Organize Your Garage

Do you have so much stuff in your garage, your car is left out in the cold? Keep reading. Your...

Tips On Preventing Accidents In The Workplace and Keep Your Employees Safe Tips On Preventing Accidents In The Workplace and Keep Your Employees Safe
Business2 months ago

Tips On Preventing Accidents In The Workplace and Keep Your Employees Safe

Preventing accidents in the workplace is both the moral and ethical responsibility of every employer. Knowing that there’s a safety...

4 Surprising Ways SaaS Can Be A Game Changer For Small Business 4 Surprising Ways SaaS Can Be A Game Changer For Small Business
Business2 months ago

4 Surprising Ways SaaS Can Be A Game Changer For Small Business

The World Wide Web will never run out of tips and strategies on how to grow your business. These days,...

Understanding SaaS, PaaS, IaaS Prior to Selecting One For Your Business Understanding SaaS, PaaS, IaaS Prior to Selecting One For Your Business
Tech2 months ago

Understanding SaaS, PaaS, IaaS Prior to Selecting One For Your Business

Summary: Cloud Computing is rising at a faster pace, and it’s crucially important for organizations to move to the Cloud...

5 Tips to Avoid Federal Tax Penalty For Taxpayers 5 Tips to Avoid Federal Tax Penalty For Taxpayers
Finance2 months ago

5 Tips to Avoid Federal Tax Penalty For Taxpayers

When you are undergoing a tax issue, then it is vital to have knowledge of what are you up against...

Spy App For Android A Tool For Keeping Workplace Spy App For Android A Tool For Keeping Workplace
Tech2 months ago

Spy App For Android A Tool For Keeping Workplace

Dealing with routine matters has been a lot easier and stress-free thanks to modern technology. Want to order food, use...

How to Create A Backyard Zen Oasis How to Create A Backyard Zen Oasis
Home Improvement3 months ago

How to Create A Backyard Zen Oasis

The lifestyle of the modern era usually depletes one’s energy by the time they get home from work. Whether or...

Mistakes You Need to Avoid When Preparing Your CV Mistakes You Need to Avoid When Preparing Your CV
Education3 months ago

Mistakes You Need to Avoid When Preparing Your CV

Writing a CV can be hard. You have to somehow condense all your experience into 1 or 2 A4 pages....

Home Decor Trends For 2021: What You Can Expect Home Decor Trends For 2021: What You Can Expect
Home Improvement3 months ago

Home Decor Trends For 2021: What You Can Expect

This year, the Covid pandemic has had a huge impact on many different industries and sectors and one which has...

Categories

Archives

Trending