Not yet investigated
What we have so far
Two liver flukes the IARC classifies as Group 1 human carcinogens. Northeast Thailand has the highest bile-duct cancer rate on earth.
This star is on the map because the show intends to take the question apart properly — the trials, how it is actually tested, whether the thing sold is the thing studied. That work is not done yet, and nothing here should be read as a conclusion. When the investigation is published it will appear on this page.