Even Low Levels of Air Pollution Linked to Higher Rates of Dementia Among Those With Heart Problems: Study

Living in areas with even low levels of air pollution may increase the risk of dementia, especially among those with pre-existing heart conditions, according to the findings of a new study.

Swedish researchers indicate that long-term exposure to particulate matter pollution and nitrogen oxide emissions may increase the risk of dementia by as much as 50%.

In findings published this week in the journal JAMA Neurology, researchers evaluated data on nearly 3,000 participants in the Swedish National Study on Aging and Care in Kungsholmen, a neighborhood in central Stockholm. Participants were older than 60 and living in the Kungsholmen district of Stockholm, Sweden, with no dementia at the start of the study.

Did You Know?

AT&T Data Breach Impacts Millions of Customers

More than 73 million customers of AT&T may have had their names, addresses, phone numbers, Social Security numbers and other information released on the dark web due to a massive AT&T data breach. Lawsuits are being pursued to obtain financial compensation.

Learn More

Researchers examined exposure to two major air pollutants from 2001 to 2004, particulate matter 2.5 (PM 2.5) and nitrogen oxide. They used dispersion models for outdoor levels at residential addresses.

Particulate matter is a mixture of soot, dust, smoke and liquid smaller than 2.5 micrometers, or 30 times smaller than one strand of human hair. The particles are so tiny they can easily be inhaled into the lungs, enter the bloodstream and spread throughout the human body.

According to the findings, the risk of dementia increased by as much as 50% for every five years a person lived in the neighborhood. Kungsholmen has consistently low air pollution levels; well below European and United States safety limits for particulate matter.

The findings of this study echo previous research indicating low levels of short-term air pollution exposure leads to health risks, even at levels below international standards. Other research published last year indicates long-term exposure can lead to increased emphysema risk, similar to lung damage seen from smoking a pack of cigarettes every day for nearly 30 years.

In the new study, the risk of dementia was even greater if a person also suffered from heart conditions. Heart failure and ischemic heart disease enhanced this association and the development of stroke seemed to be an important intermediate condition.

Other studies have shown exposure to air pollution increases a person’s risk of getting heart conditions to begin with. One study linked long-term exposure to PM 2.5 to increased risk of stroke. Another study published last month linked short term PM 2.5 exposure to increased cardiac arrest risk.

Researchers emphasize there is a need to optimize the treatment of concurrent cardiovascular disease and the risk factor in older adults who are at higher risk for dementia and living in polluted urban areas.

“The number of people living with dementia is projected to triple in the upcoming 30 years,” the researchers warned. “No curative treatment has been identified to date, and the search for modifiable risk and protective factors remains a clinical and public health priority.”


  • lisabyers20@gmail.comApril 12, 2020 at 11:47 pm

    Few years ago, I began to do a lot of research and came across HERBAL HEALTHPOINT (w w w. herbalhealthpoint. c om) and their COPD HERBAL TREATMENT. After seeing positive reviews from other patients, I quickly started on the treatment, i experienced significant recovery from symptoms, including the shortness of breath. Its been over 2 years since treatment, i live symptom free

Share Your Comments

I authorize the above comments be posted on this page*

Want your comments reviewed by a lawyer?

To have an attorney review your comments and contact you about a potential case, provide your contact information below. This will not be published.

NOTE: Providing information for review by an attorney does not form an attorney-client relationship.

This field is for validation purposes and should be left unchanged.

More Top Stories

Gilead Settlement Resolves 2,625 HIV Drug Lawsuits Pending in Federal Courts for $40M
Gilead Settlement Resolves 2,625 HIV Drug Lawsuits Pending in Federal Courts for $40M (Posted yesterday)

Gilead says it will pay $40 million to resolve HIV drug lawsuits over Truvada, Atripla, Viread, Stribild and Complera pending in the federal court system, involving claims that the the company sat on safer formulations of the drugs for years to increase profits.

Gardasil Vaccine Lawsuits Being Prepared For Early Test Trials in Federal MDL
Gardasil Vaccine Lawsuits Being Prepared For Early Test Trials in Federal MDL (Posted 2 days ago)

In advance of a a conference this week, lawyers report that progress is being made to prepare a group of federal Gardasil vaccine lawsuits for early test trials, to help gauge how juries may respond to certain evidence and testimony that will be repeated throughout the litigation.