Addition of milk prevents vascular protective effects of tea.
Lorenz M, Jochmann N, von Krosigk A, Martus P, Baumann G, Stangl K, Stangl V.
Eur Heart J. 2007 Jan;28(2):219-23. Epub 2007 Jan 9.
PMID: 17213230
doi:10.1093/eurheartj/ehl442
In conclusion, milk may counteract the favourable health effects of tea on vascular function. The finding that the tea-induced improvement of vascular function in humans is completely attenuated after addition of milk may have broad implications on the mode of tea preparation and consumption. In addition, it indicates that caution is warranted in the design of studies involving nutritional flavonoids.
High levels of carcinogenic polycyclic aromatic hydrocarbons in mate drinks.
Kamangar F, Schantz MM, Abnet CC, Fagundes RB, Dawsey SM.
Cancer Epidemiol Biomarkers Prev. 2008 May;17(5):1262-8.
PMID: 18483349
doi: 10.1158/1055-9965.EPI-08-0025
The beverage maté: a risk factor for cancer of the head and neck.
Goldenberg D, Golz A, Joachims HZ.
Head Neck. 2003 Jul;25(7):595-601. Review.
PMID: 12808663
DOI: 10.1002/hed.10288