Green tea is considered one of the healthiest beverages, but it's not suitable for everyone; some people may experience unwanted side effects.
Compounds like catechins in tea may support cardiovascular health, improve metabolism, enhance brain function, and protect cells from damage.
Green tea can also support weight management due to its ability to mildly boost metabolism and burn fat, with the most noticeable effects when combined with a balanced diet and regular exercise.
Most experts recommend that people drink about 2-3 cups of green tea per day. Consuming too much can cause side effects due to caffeine.
Additionally, drinking green tea on an empty stomach can cause increased acidity or stomach discomfort in some people, so it is generally recommended to drink it after a meal.
In addition, according to Money Control, Dr. Rahul Sharma, a clinical nutritionist in Delhi, India, said that some groups of people should consider limiting or avoiding green tea.
People who are sensitive to caffeine.
Although green tea contains less caffeine than coffee, it can still have an effect on people sensitive to stimulants. Common symptoms include restlessness, anxiety, rapid heartbeat, or difficulty sleeping.
People who already suffer from insomnia or nervous tension may find their symptoms worsen, especially if they drink large amounts of green tea or drink it in the evening.
People with iron deficiency
The tannins in green tea can interfere with the absorption of iron from plant-based foods. This is especially important to note for people who are iron-deficient or at risk of iron-deficiency anemia.
The habit of drinking green tea during or immediately after meals can reduce the absorption of important nutrients, potentially leading to iron deficiency if left unchecked.
Pregnant and breastfeeding women
Pregnant or breastfeeding women should exercise particular caution when consuming green tea. The caffeine in tea can cross the placenta and affect the fetus if consumed in large quantities.
Additionally, excessive caffeine intake during pregnancy may be linked to risks such as low birth weight or sleep disorders in infants.
People with digestive problems
People with excess stomach acid may experience discomfort after drinking green tea, especially on an empty stomach. The tannins in tea can stimulate stomach acid production, causing nausea or discomfort. For those with acid reflux or gastritis who are sensitive to caffeine, symptoms may worsen when consuming green tea.
People who are taking certain medications
Green tea can also interact with certain medications, including blood thinners, stimulants, and some cardiovascular drugs. These interactions can alter the effectiveness of the medication or the body's response.
Therefore, people who are taking prescription medication should consult their doctor before drinking green tea regularly.