This is interesting, but the article just explains the benefits of coffee. What are the downsides? I would like to hear why he quit.
Caffeine:
Stimulant/Vasoconstrictor/dopaminergic
half-life: ~5 hours
Fat + water soluble
Ideal dosage < 200mg; 50-100mg per day
Benefits: boosts working memory, reduces re-uptake and increases production of dopamine, improves alertness, attention span, memory retrieval, acetylcholinesterase inhibitor.
Downside: increased blood pressure and sustained high levels of heart rate, adesonine reuptake inhibitor and mildly addictive through dopaminegic pathways, acetylcholinesterase inhibitor.
Synergistic with: theanine, sulbutiamine
Possibly: antioxidant effect+, MAO A and B inhibitor+ , protective vs Parkinson's+, damaging to hippocampus- , damaging to short term retrieval of unrelated tasks-
Decision: Minimize usage to less than weekly.
Okay.
http://www.drweil.com/drw/u/QAA400146/Is-Coffee-Good-For-You...
http://www.ncbi.nlm.nih.gov/pubmed?term=caffeine%20cancer http://www.ncbi.nlm.nih.gov/pubmed/21907331 http://www.ncbi.nlm.nih.gov/pubmed/19581722
Moderate caffeine intake is on track to be firmly in the green for most people. However, not everyone metabolizes and reacts to it identically, so the author of the article in question may be one of those people who does not get a lot of benefits.
But there is this funny idea floating around that caffeine is carcinogenic and long-term use may cause cognitive impairment, and there is very little evidence for that.