Tea can contain or absorb various toxic compounds, depending on a variety of factors, such as the soil where the tea grew, the environment and the method of harvesting, storage and brewing recipe. A number of studies have revealed excessive levels of toxic elements in various types of tea leaves.
Tea contains a high amount of lead, which can cause heart disease, kidney problems and reproductive problems. About 73% of the teas brewed for three minutes and 83% of them brewed for 15 minutes had a potentially unsafe amount, and 20% of the teas brewed for 15 minutes contained high levels of aluminum.
Tea with citric acid increases the amount of aluminum, cadmium and lead 70 times.
In cheap teas, fluoride exceeds the norm by a factor of three, which has been observed in more expensive varieties. Consuming too much fluoride can damage your teeth, bones, and joints.
Scientists have analyzed 44 types of herbal teas intended for infants, pregnant and lactating women. They found that 38 of them contain a positive result on pyrrolizidine alkaloids, toxins produced by some flowering plants that can cause damage to the liver.
This is of particular importance for pregnant and lactating women, because they can transmit toxic compounds to the fetus or with milk to a child who is more vulnerable to the toxic effects of pyrrolizidine alkaloids due to low body weight.
How to stay safe and drink tea with pleasure
Watch the brewing time, it should not exceed three minutes, and avoid drinking tea from regions with higher levels of pollution, like China, India and Sri Lanka. Tea from China contains high levels of lead and aluminum, probably due to contaminated soil due to coal-fired power plants. Think about the choice of white tea - its leaves are young and did not have time to absorb heavy metals. You can minimize the effects of heavy metals through the consumption of essential minerals and vitamin D.
To reduce the effects of fluoride, it is necessary to limit the time of brewing, and give preference to more expensive types of tea. Do not drink more than four cups of tea a day. Try giving up teas such as Assam, Ceylon, Oolong, or Darjeeling.
Try not to stick to just one manufacturer. Instead, mix different suppliers and types of tea. For example, do not drink only one mint tea from one brand, but different types of tea from different companies. As for teas with a high level of plant toxin, the highest levels of toxins currently contain rooibos, and to a lesser extent peppermint tea, chamomile and other herbs such as fennel and their mixtures, but still in pure fruit teas almost never Toxins have been found.