There's a silly non-COVID-19 science headline I'M SO HAPPY GUYS 
https://twitter.com/justsaysrisks/status/1385109570205339651
The study itself is interesting - sleep duration and risk of dementia, lots of follow-up, decent sized sample (although relatively few events) nature.com/articles/s4146…
But the headline is super misleading for so many reasons. My faves:
1. absolute risk is really small (~1 case per 1,000 person-years)
2. The authors acknowledge later in the article that they don't know if this is causal or not
1. absolute risk is really small (~1 case per 1,000 person-years)
2. The authors acknowledge later in the article that they don't know if this is causal or not
Also, tons of previous research has suggested that there is a bi-directional association between sleep and dementia risk (i.e. too little or too much is bad) which the authors also acknowledge
Better headline might be "Lack of SLEEP may increase your dementia risk by 0.1%, however other lifestyle factors cannot be excluded as the real cause"
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