Study: Blood test could detect Alzheimer's 10 years before diagnosis


New research published in the Journal of the Federation of American Societies for Experimental Biology (FASEB) suggests that blood tests could be used to detect Alzheimer's disease a full 10 years before it is clinically diagnosed.
The study authors found that the blood test could measure the brain's insulin resistance, which is a symptom of Alzheimer's. Early detection could delay the disease and slow patients' mental decline, Time reports.
The researchers froze blood samples from Alzheimer's patients up to 10 years before they were diagnosed. The levels of IRS-1, an insulin receptor, in the patients' blood indicated which patients had Alzheimer's disease.
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
The findings are still preliminary — the study used a limited sample size, and the blood test isn't available for public use. The study will "need to be replicated in a larger sample and expanded upon," study author Ed Goetzl told Time. But the researchers are hopeful that the study holds promise for detecting Alzheimer's disease and treating patients.
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
Meghan DeMaria is a staff writer at TheWeek.com. She has previously worked for USA Today and Marie Claire.
-
5 weather-beaten cartoons about the Texas floods
Cartoons Artists take on funding cuts, politicizing tragedy, and more
-
What has the Dalai Lama achieved?
The Explainer Tibet’s exiled spiritual leader has just turned 90, and he has been clarifying his reincarnation plans
-
Europe's heatwave: the new front line of climate change
In the Spotlight How will the continent adapt to 'bearing the brunt of climate change'?
-
New York plans first nuclear plant in 36 years
Speed Read The plant, to be constructed somewhere in upstate New York, will produce enough energy to power a million homes
-
Dehorning rhinos sharply cuts poaching, study finds
Speed Read The painless procedure may be an effective way to reduce the widespread poaching of rhinoceroses
-
Breakthrough gene-editing treatment saves baby
speed read KJ Muldoon was healed from a rare genetic condition
-
Sea lion proves animals can keep a beat
speed read A sea lion named Ronan beat a group of college students in a rhythmic dance-off, says new study
-
Humans heal much slower than other mammals
Speed Read Slower healing may have been an evolutionary trade-off when we shed fur for sweat glands
-
Novel 'bone collector' caterpillar wears its prey
Speed Read Hawaiian scientists discover a carnivorous caterpillar that decorates its shell with the body parts of dead insects
-
Scientists find hint of alien life on distant world
Speed Read NASA's James Webb Space Telescope has detected a possible signature of life on planet K2-18b
-
Katy Perry, Gayle King visit space on Bezos rocket
Speed Read Six well-known women went into lower orbit for 11 minutes