I think it’s worth accompanying this study with the Simpson’s Paradox [0]. I don’t want to dismiss the conclusions of the paper, but temper expectations for individuals considering lifestyle changes.
I wish they'd used hours after waking/before sleeping vs simply defining morning as between 4am and 12:00pm or evening as being between 5pm and 4:am
People who wake and work later would normally drink coffee more often at later hours and there's already a bunch a research showing 2nd/3rd shifts can cause health issues which wouldn't show up in the people who get up at 5am and have a cup or two in the next few hours.
Would be nice to have more of a control with non coffee drinkers.
Nutrition and psychology studies with soundbite conclusions like this almost always fail to replicate.
How even small lifestyle habits, like when you drink your coffee, can have an impact on life
Or life could have an impact on when you drink your coffee.
Exactly. I think this study could equally be interpreted as demonstrating the limitations of the researchers ability to control for variables.
Our habits shape our lives, but our circumstances and routines often dictate those habits...
kinda obvious: you drink coffee late, have trouble sleeping, and all kind of consequences as result..
They supposedly accounted for sleep differences already.