Depending on the tea you drink, you may be getting too much caffeine. Black, white, and green teas include 14-61mg of caffeine per serving.
Caffeinated tea is stimulating, so drinking too much of it in the late afternoon or early evening may throw off our natural sleep patterns and, in turn, our circadian rhythms.
Drinking hot tea has been related to an increased risk of esophageal squamous cell carcinoma, which is a cancer of the lining of the esophagus.
Researchers in Northern Iran found that high consumption of hot black tea was associated with an increased risk of esophageal cancer.
Studies suggest that tea has wonderful health advantages, but people with anemia or iron deficiency should be careful about drinking it.
Both black and green tea restrict iron bioavailability by 94%, according to a research. Bioavailability measures how well our body absorbs a nutrient.
Black and green teas are diuretics that cause frequent urination. Diuretics increase salt in the kidneys, which the body excretes with water.
Tea is sometimes prescribed to persons with water retention, although it might cause dehydration in others.
Theophylline is a common tea component. Theophylline in tea can cause gastrointestinal problems, according to the National Cancer Institute.
If you are prone to stomach issues, you may want to monitor how your favorite tea affects your frequency of trips to the restroom.