The tea bags in the water do not take out, will not affect health! As for some people pointed out, tea leaves steeped for too long, will make the pesticides, heavy metals and other harmful substances leaching. Chinese Academy of Agricultural Sciences Research Institute researcher Yin Junfeng pointed out that this argument, although there is some truth, but do not have to worry too much. Most of the pesticides used in the production of tea in China's water solubility is extremely low, according to each person to drink 10 grams of tea per day, even if the brewing of 1 mg / kg residue of tea, pesticide intake is only 0.0001 mg, the World Health Organization regulations allow daily intake of a few thousandths of the amount. The leaching rate of lead, a heavy metal in tea, is also relatively low.

From the absorption of nutrients, tea bags are best brewed only 1 time, because the tea bag of tea in the processing of the manufacture of tea through the cutting and kneading, fully in the destruction of the leaf cells, the shape of the particles is fine, the nutrients in the tea after 3-5 minutes of the first infusion, there will be 80% -90% precipitation, the second brewing, the remaining 10% of the nutrients are also almost all precipitation.