dementia

https://www.npr.org/sections/health-shots/2018/10/10/654445929/when-icu-delirium-leads-to-symptoms-of-dementia-after-discharge

Rigorous exercise does not halt dementia decline, study concludes Keeping active helps prevent the onset of dementia, but once the disease has taken hold, working out more does nothing to slow its progress Guardian article available @...

https://www.medscape.com/viewarticle/896005

Caveat - in a large scale longitudinal study traumatic brain injury correlates with the development of dementia in later life in a 'dose dependent' manner. http://www.dailymail.co.uk/health/article-5331147/Suffering-blow-head-raises-risk-dementia.html If causal - the exact mechanism remains...