Mahtab Jafari's, the head of the research group at the University of California, Irvine, seeks ways to increase the human lifespan.
Fruit flies, make an ideal model system to study aging due to the similarity to disease genes. They share 75% of the disease genes found in humans. They even share certain aspects of human physiology, like consuming too much alcohol makes them act drunk.
"While green tea could have health benefits at low doses, our study and other have shown that at high doses, it may have adverse effects," Jafari said, according to the Indian Express. "Further work is needed to make any definite recommendations, but we suggest that green tea should be consumed in moderation."