Particles of iron oxide (magnetite) related to air pollution have been discovered in samples of human brain tissue. There may be a weak link between air pollution-related particulates and development of dementia and Alzheimer’s Disease, but the evidence at present is circumstancial rather than established.
“We already know oxidative damage contributes to brain damage in Alzheimer’s patients so if you’ve got iron in the brain it’s very likely to do some damage. It can’t be benign”. Prof David Allsop, Lancaster University.
Shukman, D. (2016). Pollution particles ‘get into brain’. London: BBC Science & Environment News / BBC Health News, September 5th 2016.
Magnetite from air pollution found in brain tissue for the first time, research finds. London: Alzheimer’s Society, September 5th 2016.
This relates to:
Full Text Link (Note: This article requires a suitable Athens password, a journal subscription or payment for access).
Maher, BA. Ahmed, IAM. [and] Karloukovski, V. [et al] (2016). Magnetite pollution nanoparticles in the human brain. Proceedings of the National Academy of Sciences of the United States of America (PNAS). September 5th 2016. [Epub ahead of print].
Further appraisal of this research:
Pollution particles in the brain ‘linked to Alzheimer’s disease’. London: NHS Choices; Behind the Headlines, September 7th 2016.
Speed bumps don’t help:
Councils urged to redesign speed bumps to cut pollution. London: BBC Health News, December 1st 2016.
So I Can Breathe
The BBC’s “So I Can Breathe” series examined air pollution in the UK (and around the world):
Harrabin, R. (2017). How bad is air pollution in the UK? London: BBC Science News, March 6th 2017.
June 2017 Update
Public Health England (PHE) and the National Institute for Health and Care Excellence (NICE) have released guidance.
Gallagher, J. (2017). ‘Ban parents from leaving engines on’, says guidance. London: BBC Health News, June 30th 2017.