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Animal experiments were conducted to confirm the suppressive effect of green tea on the intestinal absorption and tissue accumulation of toxic heavy metals in rats. When drinking water contaminated with 500 and 5000 times level of water quality standard for lead or cadmium was administrated to rats ...

Animal experiments were conducted to confirm the suppressive effect of green tea on the intestinal absorption and tissue accumulation of toxic heavy metals in rats. When drinking water contaminated with 500 and 5000 times level of water quality standard for lead or cadmium was administrated to rats for 3 weeks, feed intake and body weight gain were not significantly differrent among all groups except for high cadmium group. In the relative weights of target organs, kidney and femur showed a significant difference by heavy metal administration and green tea did not influence on the weights. Green tea showed a suppressing effect on the accumulation of heavy metals in target organs, in which the reducing effect in femur was $25{\sim}45%$ for lead, and 42% for cadmium. As calcium content of femur decreased by heavy metal administration was increased in green tea group, it was concluded that heavy metal accumulation in femur was interrupted by tea beverage.

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