side effects of drinking green tea
Side Effects of Drinking Green Tea
Green tea is a refreshing beverage which has become quite popular these days. Along with the many health benefits, it has some side effects too. This article provides information regarding the health benefits and side effects of consuming this herbal tea.
- Each cup of green tea contains nearly 40 milligrams of caffeine. Hence, green tea drinkers who are sensitive to caffeine may suffer from sleeping disorders like the loss of sleep (even for an entire night), hypertension, anxiety, irritability, heart palpitations, frequent urination, nausea, loss of appetite, stomach upset, tremors, and skin rashes.
- Another side effect of green tea consumption is iron malabsorption. The herbal tea extract reduces the absorption of certain nutrients and non-heme iron by 25% and may cause an iron deficiency in the body.
- Green tea comprises caffeine, catechins, and tannic acids, which have been linked to pregnancy risks. Excessive intake of green tea can cause neural tube birth defect in babies. Therefore, it should be avoided during the periods of early pregnancy.
- It is not advisable for kids to drink green tea as it contains tannic acids, which obstructs the absorption of nutrients, such as proteins and fats in the body. This further leads to weak bones, bad teeth, and some allergies in children.
- The tea reduces the absorption of thiamine (vitamin B1), thereby causing beriberi. Beriberi is a nervous system disorder which causes weight loss, impaired sensory perception, weakness, and pain in limbs, edema (swelling of bodily tissues), and irregular heart rate.
- It is also believed that since green tea is rich in oxalic acid, it may be responsible for kidney stones in the body. Kidney stones are mineral deposits formed by calcium, uric acid, or amino acid cysteine, in combination with phosphate or oxalic acid.
- Too much intake of green tea may cause skeletal fluorosis, especially in middle-aged people.
- The tea may not get along well with some medications like adenosine, blood thinners, some antibiotics, antipsychotics, sedatives, beta blockers, MAOIs (Monoamine oxidase inhibitors), some cold, cough, and weight loss products.