Study Links Transportation Noise to High Rates of Dementia and Alzheimer's

A large nationwide cohort study in Denmark found "transportation noise from road traffic and railways to be associated with an increased risk of all-cause dementia and dementia subtypes, especially Alzheimer’s disease."

1 minute read

September 14, 2021, 6:00 AM PDT

By James Brasuell @CasualBrasuell


Noise

Anna.Kraynova / Shutterstock

"Exposure to noise from road traffic and railways is associated with an increased risk of dementia," reports Andrew Gregory.

Gregory is sharing the findings of a new study by researchers in Denmark and published by the journal BMJ.

"Research has consistently linked transport noise to health conditions including heart disease, diabetes and obesity, but studies on transport noise and dementia were scarce and small, and findings inconsistent," explains Gregory. The new study sets a new standard, involving two million adults over more than a decade.

"After taking account of potentially influential factors related to residents and their neighbourhoods, the study concluded that as many as 1,216 out of the 8,475 cases of dementia registered in Denmark in 2017 could be attributed to transport noise," according to Gregory.

The source article includes more details on the methodology, findings, and limitations of the study. Also included are data about the scale of dementia in the global population—it follows that reducing traffic noise would reduce the public health costs of dementia.

Thursday, September 9, 2021 in The Guardian

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Bird's eye view of manufactured home park.

Manufactured Crisis: Losing the Nation’s Largest Source of Unsubsidized Affordable Housing

Manufactured housing communities have long been an affordable housing option for millions of people living in the U.S., but that affordability is disappearing rapidly. How did we get here?

March 25, 2025 - Shelterforce

U-Haul truck on road with blurred grassy roadside in background.

Americans May Be Stuck — But Why?

Americans are moving a lot less than they once did, and that is a problem. While Yoni Applebaum, in his highly-publicized article Stuck, gets the reasons badly wrong, it's still important to ask: why are we moving so much less than before?

March 27, 2025 - Alan Mallach

Close-up of rear car bumper in traffic on freeway.

Research Shows More Roads = More Driving

A national study shows, once again, that increasing road supply induces additional vehicle travel, particularly over the long run.

March 23, 2025 - Road Capacity as a Fundamental Determinant of Vehicle Travel

Colorful blocky apartment building facade.

Minneapolis Bans Rent-Setting Software

Four cities have enacted restrictions on algorithmic software that can inflate rent costs.

45 minutes ago - Stateline

Silver electric BMW car parked in driveway of home in Oakland, California.

Oakland to Add 244 New EV Chargers

Oakland plans to launch its new charging network at eight locations by the end of 2025.

1 hour ago - City of Oakland

Sculpture of seated Jane Goodall holding hands with chimp on green lawn.

Jane Goodall Inspires with Message of Hope, Resilience, and Environmental Action

Speaking in Pasadena, Jane Goodall offered a hopeful and inspirational message, urging global compassion, environmental responsibility, and the power of individual action to shape a better future.

2 hours ago - Pasadena Star-News

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.