Repeated head injuries may accelerate Alzheimer’s

Associated Press

PHILADELPHIA — A study of mice released Tuesday suggests repeated head injuries may accelerate Alzheimer’s disease.

Researchers found mice that received repetitive knocks to the head — similar in severity to what a professional boxer or football player would experience — developed deposits of a plaquelike protein faster than mice that did not suffer head trauma.

The protein, amyloid beta, seemed to appear in mice in response to the injuries and can be found in brains of Alzheimer patients, the University of Pennsylvania researchers said.

Even without head trauma, the mice eventually developed the harmful plaques later in life, but with the trauma, they produced symptoms of Alzheimer’s disease much more quickly, according to the study, published in The Journal of Neuroscience. The mice used in the study contain the human gene that produces the protein.

The findings could be a promising development in Alzheimer’s research but using mice as a research model has limitations, said Dr. Zaven Khachaturian, senior medical adviser to the Alzheimer’s Association, who was not involved in the research.

The study is not the first to link head injuries and Alzheimer’s.

A report released in 2000 by the National Institute on Aging compared the cases of World War II soldiers and found those who suffered moderate head injuries during the war were twice as likely to develop Alzheimer’s. Those who had severe injuries were four times as likely to develop the condition.

Alzheimer’s disease, generally diagnosed after the age of 60, progressively destroys memory and eventually the ability to care for oneself. About 4 million Americans have been diagnosed with Alzheimer’s.

Copyright ©2002 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

Talk to us

> Give us your news tips.

> Send us a letter to the editor.

> More Herald contact information.

More in Local News

Customers enter and exit the Costco on Dec. 2, 2022, in Lake Stevens. (Olivia Vanni / The Herald)
Costco stores could be impacted by looming truck driver strike threat

Truck drivers who deliver groceries and produce to Costco warehouses… Continue reading

Two Washington State ferries pass along the route between Mukilteo and Clinton as scuba divers swim near the shore Sunday, Oct. 22, 2023, in Mukilteo, Washington. (Ryan Berry / The Herald)
Ferry system increases ridership by a half million in 2024

Edmonds-Kingston route remains second-busiest route in the system.

Fernando Espinoza salts the sidewalk along Fifth Avenue South on Thursday, Feb. 6, 2025 in Edmonds, Washington. (Olivia Vanni / The Herald)
Think this is cold, Snohomish County? Wait until Tuesday

Tuesday could bring dangerous wind chill during the day and an overnight low of 19 degrees

The Washington State Department of Licensing office is seen in 2018 in Seattle. (Sue Misao / The Herald)
Drivers licensing offices to close Feb. 14-17

Online services are also not available Feb. 10-17. The Washington State Department of Licensing said the move is necessary to upgrade software.

Pharmacist Nisha Mathew prepares a Pfizer COVID booster shot for a patient at Bartell Drugs on Broadway on Saturday, Oct. 1, 2022, in Everett, Washington. (Ryan Berry / The Herald)
Everett lawmakers back universal health care bill, introduced in Olympia

Proponents say providing health care for all is a “fundamental human right.” Opponents worry about the cost of implementing it.

Robin Cain with 50 of her marathon medals hanging on a display board she made with her father on Thursday, Jan. 2, 2025 in Lake Stevens, Washington. (Olivia Vanni / The Herald)
Running a marathon is hard. She ran one in every state.

Robin Cain, of Lake Stevens, is one of only a few thousand people to ever achieve the feat.

People line up to grab food at the Everett Recovery Cafe on Wednesday, Dec. 4, 2024 in Everett, Washington. (Olivia Vanni / The Herald)
Coffee, meals and compassion are free at the Everett Recovery Cafe

The free, membership-based day center offers free coffee and meals and more importantly, camaraderie and recovery support.

Devani Padron, left, Daisy Ramos perform during dance class at Mari's Place Monday afternoon in Everett on July 13, 2016. (Kevin Clark / The Herald)
Mari’s Place helps children build confidence and design a better future

The Everett-based nonprofit offers free and low-cost classes in art, music, theater and dance for children ages 5 to 14.

The Everett Wastewater Treatment Plant along the Snohomish River on Thursday, June 16, 2022 in Everett, Washington. (Olivia Vanni / The Herald)
Everett water, sewer rates could jump 43% by 2028

The rate hikes would pay for improvements to the city’s sewer infrastructure.

The bond funded new track and field at Northshore Middle School on Thursday, Oct. 24, 2024 in Bothell, Washington. (Courtesy of Northshore School District)
Northshore School District bond improvements underway

The $425 million bond is funding new track and field complexes, playgrounds and phase one of two school replacements.

Outside of the updated section of Lake Stevens High School on Thursday, Feb. 27, 2020 in Lake Stevens, Wa. (Olivia Vanni / The Herald)
Lake Stevens, Arlington school measures on Feb. 11 ballot

A bond in Lake Stevens and a levy in Arlington would be used to build new schools.

Lake Stevens Sewer District wastewater treatment plant. (Lake Stevens Sewer District)
Lake Stevens sewer district trial delayed until April

The dispute began in 2021 and centers around when the city can take over the district.

Support local journalism

If you value local news, make a gift now to support the trusted journalism you get in The Daily Herald. Donations processed in this system are not tax deductible.