“The association between coffee consumption and all-cause mortality was U-shaped; coffee intake seemed optimal at 3–5 cups/d with the lowest risk at 4 cups/d (HR: 0.68, 95% CI: 0.53, 0.88). Our results suggest that coffee consumption may be associated with a lower risk of CRC recurrence and all-cause mortality.”
Well, what exactly counts as a cup then?
“Coffee consumption in cups/d was then calculated by multiplying the frequency of consumption per day by the number of cups that were consumed. We further accounted for the differences in the sizes of cups by multiplying coffee in cups/d by 1 (for cup) or 1.5 (for mug).“
I guess the traditional 100 ml cups and the common 200 ml cups are all just cups, whereas 300 ml mug is clearly a mug. Who knows really, when the data is all self reported. I guess my 400 ml/d consumption should be roughly optimal.