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Coffee consumption and health: umbrella review of meta-analyses of multiple health outcomes

BMJ 2017; 359 doi: https://doi.org/10.1136/bmj.j5024 (Published 22 November 2017) Cite this as: BMJ 2017;359:j5024

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Re: Coffee consumption and health: umbrella review of meta-analyses of multiple health outcomes

Coffee maybe, but caffeine? In evolutionary terms caffeine is a neurotoxic insecticide and as our physiology has common routes it would be expected that we would be similarly effected? All the morbidity and mortality cited is physical and no mental health conditions included. Paucity of research into mental health or a bias? Anxiety and insomnia are everyday experiences for some caffeine users and withdrawal headaches and morning apathy without that early caffeine hit reinforcing their dependence a daily spectacle at our miriad of coffee shops on offer.

Competing interests: No competing interests

25 November 2017
Malcolm Bruce
Consultant Addiction Psychiatrist
Freelance
Edinburgh