The liver functions as the filter to remove toxins from the body. These toxins were caused by environmental chemicals or foods and beverages we consume. Milk thistle removes toxins from the liver and improves liver function. Green tea exerts a mild diuretic effect to help in toxin removal. Regular consumption of green tea protects the liver. A group of naturally occurring compounds in green tea known as catechins, have an anti-oxidant effect. Green tea has a protective effect against toxins such as heavy metals, synthetic chemicals and harmful micro-organisms.