
Originally Posted by
JamesS
This is really nothing useful.
The first problem is that this is a Petri dish study. What happens in Petri dishes does not always correlate to what happens in the body. For example, there was one study that claimed that the herb St. Johnswort could cause infertility. The claim was based on a Petri dish study in which they applied St. Johnswort extract directly to sperm and found this could deform or kill the sperm. St. Johnswort though does not affect semen in the body though. Just like vitamin C will kill semen if directly applied. Yet everyone consumes vitamin C yet we were all somehow born.
The other limiting factor to this abstract is from this comment in the abstract:
"We found that yerba mate extract induced a concentration-dependent, statistically significant increase in the level of apoptotic and necrotic cells and a decrease in the nuclear division index (NDI)."
So they are using a concentrate directly on the lymphocytes but there is no statement as to what kind of extract, how concentrated the extract is or how high the levels of concentrate had to be to cause alterations in the cell. If I wanted to prove yerba mate' was toxic I could make a concentrated ethanol extract and apply it to any cell culture of the body and be able to induce alterations in the cell. Although I could do the same thing with virtually any substance, even a piece of steak.