There's too little information on the sampling > We conducted prospective analyses of habitual coffee consumption on 398,646 UK Biobank participants (age 37–73

There's too little information on the sampling > We conducted prospective analyses of habitual coffee consumption on 398,646 UK Biobank participants (age 37–73 years), including 17,702 participants with MRI information. We examined the associations with brain volume using covariate adjusted linear regression, and with odds of dementia (4,333 incident cases) and stroke (6,181 incident cases) using logistic regression. The study had access to a relatively large dataset, but how many people have dementia and drink >6/day? Also, for understanding the effects of coffee drinking on dementia the data set has to be tracked for a decent amount of time... decades? I have very strong doubts about the integrity of the data. How long do you have to drink >6/day before that kicks in? obviously doing it once isn't going to cut it.