Originally Posted by
KDS777
Drinking it multiple times per day is exactly what occurs in southern Brasil.
Is matcha (ground and de-veined leaf consumed whole) being drunk several times a day?
Or are you talking about green tea (where the leaves are steeped (often several times) and then discarded?
A cite would be good here.
I can only find this study which associates the drinking of (yerba) maté with increased incidences of cancers of the head and neck -
https://www.ncbi.nlm.nih.gov/pubmed/12808663