Taxi Drivers Rarely Die of Alzheimer's
An anonymous reader shares a report from The Conversation, written by Hatim Sharif, a civil and environmental engineer who has "spent more than two decades staring at maps" and spatial data. Sharif finds one connection especially fascinating: the link between spatial reasoning and why taxi drivers seem to have lower rates of Alzheimer's. From the report: Taxi and ambulance drivers are less likely…
A recent study published in The Conversation has revealed an intriguing link between taxi and ambulance drivers' reduced risk of developing Alzheimer's disease. The research, which analyzed death certificates from nearly 9 million people in the U.S. between 2020 and 2022, found that taxi and ambulance drivers had the lowest risk of dying from Alzheimer's compared to individuals in 443 other occupations.
After accounting for age, sex, race, ethnicity, and education, only about 1 in 100 taxi and ambulance drivers died from Alzheimer's, as opposed to 1 in 60 individuals overall. This protective effect was not observed in other driving professions, suggesting that the key to reducing Alzheimer's risk lies not in driving per se, but in continuous real-time navigation tasks.
These tasks involve constantly locating oneself in space, tracking destinations, and updating mental maps as conditions change. The hippocampus, a brain region responsible for memory and spatial navigation, is believed to be central to this phenomenon. Neuroscientists have observed that the hippocampus, one of the first areas to deteriorate in Alzheimer's patients, experiences structural changes in individuals who engage in navigation-heavy work.
London taxi drivers, who undergo extensive training known as "The Knowledge" to memorize over 25,000 streets, were found to have increased gray matter in the posterior hippocampus, a brain area associated with storing large-scale spatial maps. The size of this area correlated with the length of their driving experience, suggesting that the job itself contributes to the brain's reshaping.
These findings imply that occupations requiring intense hippocampal engagement may protect against Alzheimer's, highlighting the potential benefits of mentally stimulating work for brain health in aging populations.
Written by urgent.news from Slashdot's reporting — not their text. Machine-written — it may contain errors, so check the original before relying on it.
This story
This is one outlet's version. Read the fullest account.
