The huge rise in liver cancer deaths in Australia could be partly driven by a toxic effect of increasingly warmer temperatures.
earlier this year that aflatoxin could explain the much higher risk levels for liver cancer in Australia’s warm, humid north compared with cooler regions.
“As you get warming, as you get higher humidity, the peanut mould that produces the aflatoxin is going to be more abundant. No question. And aflatoxin is really bad news,” said Professor George Yeoh, who heads a liver cancer research lab at the Harry Perkins Institute of Medical Research and was not involved in the research. “They have a point.”
What makes the liver cancer story particularly striking is that it is an outlier. Rates of other cancers are growing slowly orAnd the growth comes in the face of serious efforts to stamp it out. A vaccine for hepatitis B, one of the major causes of liver cancer, wasThat’s what drew the interest of QUT Professor Wenbiao Hu and his team.To isolate potential causes, the team compared the incidence of liver and lung cancer.
Plotted on a map, the difference is stark. Australia’s tropical north has a relatively higher risk of liver cancer than other regions. “Aflatoxin-producing fungi are abundant in hot and humid regions, especially northern Australia. And we find liver cancer risk is higher in northern Australia,” said co-author Ting Gan.mould and often found in peanut and corn crops, causes mutations in liver cells, leading to cancer, Yeoh said.
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