News Harvard T H. Chan School of Public Health

Caffeine is passed through breast milk to infants so monitor your intake in coordination with your physician. Drinking more than 2 cups per day can lead to miscarriage and birth defects in children. Make sure to keep your caffeine intake below 200 milligrams per day. Green tea contains antioxidants that hinder the iron absorption in the human body. A meta-analysis showed that this side effect can be a particularly dangerous for people who suffer from anemia or other disease where iron deficiency is present (6). One case study found that green tea caused anemia in a 48 year old businessman who consumed 1500 milliliters (6 cups) of green tea every weekday for years (7).

The numbers in the parentheses (1, 2, 3) are clickable links to peer-reviewed scientific papers. Caffeine is a habit-forming stimulant, and regular intake from tea or any other source could lead to dependence. Caffeine may also contribute to an increase in total stomach acid production. You can also try adding a splash of milk or having some food with your tea. Tannins can bind to proteins and carbs in food, which can minimize digestive irritation.

What Happens to Your Body When You Drink Too Much Green Tea

However, just as many good things have their shortcomings, green tea is not an exception. While green tea is not a substitute for sunscreen, its antioxidant properties can offer a layer of internal defense against the sun’s harmful ultraviolet (UV) rays. EGCG helps to reduce inflammation and oxidative stress induced by UV exposure, which are primary drivers of photodamage and premature skin aging.

Acute Inflammation Vs. Chronic Inflammation

Before it’s actually harvested, it’s covered for about 20 days, which causes it to develop a sweet flavor that stands out from any other varieties. You can buy loose leaf matcha tea for steeping or you can buy it in its popular powder form for quick consumption. If you want a green tea that is aromatic, flavorful, and full of nutrients, Matcha will be a great place to start. You can also combine it with milk and sweetener to make for an interesting latte beverage. At clinically studied doses (~300 mg/day), side effects are rare and mild.

How we reviewed this article:

• Yes, green tea may aid in weight loss by boosting metabolism and fat burning, especially when combined with regular exercise and a healthy diet.
• However, green tea also contains L-theanine, which promotes calmness and may counteract some of caffeine’s effects.
• Some of these medications used for depression include phenelzine (Nardil), tranylcypromine (Parnate), and others.
• If you are sensitive to caffeine, you may experience symptoms such as jitteriness or restlessness.
• Most side effects are related to tea’s caffeine and tannin contents.
• According to some experts, moringa seed oil may also have benefits for hair health.

Tannins in tea leaves are responsible for the bitter, dry taste of tea. The astringent nature of tannins can also irritate digestive tissue, potentially leading to uncomfortable symptoms, such as nausea or stomach ache. If you have low iron but still enjoy drinking tea, consider having it between meals as an extra precaution. Doing so will make it less likely to affect your body’s ability to absorb iron from your food at mealtimes.

In rare cases, green tea can trigger bleeding disorders (11). Compounds in green tea decrease levels of fibrinogen, a protein that helps clot blood. Green tea also prevents the oxidation of fatty acids, which can lead to thinner blood consistency.

Benefits of drinking green tea

Iron deficiency is one of the most common nutrient deficiencies in the world, and if you have low iron levels, excessive tea intake may exacerbate your condition. Green tea is well known for promoting mental alertness, and the science backs up its reputation. Talk with a healthcare provider if you have low iron levels.

Your Blood Sugar Levels May Regulate

Stimulant drugs such as nicotine speed up the nervous system. By speeding up the nervous system, stimulant medications can make you feel jittery and increase your heart rate. The caffeine in green tea might also speed up the nervous system. Taking green tea along with stimulant drugs might cause serious problems, including increased heart rate and high blood pressure. Taking green tea unimeal app reviews extracts along with medication that might also harm the liver can increase the risk of liver damage. Do not take green tea extracts if you are taking a medication that can harm the liver.

Think of EGCG as a diligent protector, helping to shield your skin cells from daily environmental stressors. The interest in green tea extract for fibroids largely stems from specific research, notably a randomized, placebo-controlled clinical trial led by Dr. Ayman Al-Hendy and his team. This study provided some of the most compelling evidence to date regarding EGCG’s potential effects on uterine fibroids. Green tea is well-known for its many health benefits, such as supporting metabolism and providing antioxidants. However, like any natural remedy, it’s important to understand that it may also cause side effects in certain individuals. This guide highlights common and mild potential side effects of drinking green tea and offers tips on how to enjoy it safely as part of a healthy lifestyle.

Should you take ashwagandha supplements?

According to some experts, moringa seed oil may also have benefits for hair health. In this article, find out what moringa is, what benefits it may offer, and its possible side effects. For stress support, blends like our Vitality Blend include herbs traditionally used for calm and hormonal balance. Ashwagandha is better known for stress reduction and testosterone support.

Heart Disease Prevention:

Green tea can be a powerful part of a healthy routine, but like all good things, moderation is key. Consult your healthcare provider before regularly drinking green tea, especially if you have a pre-existing health condition or are taking prescription medications. Decaffeinated green tea is a milder option for individuals sensitive to caffeine. However, caffeine-infused green tea is usually preferred for its energizing properties. Both have their own potential health benefits, so it is important to make a decision based on personal tolerance levels and medical requirements.

Potential ashwagandha benefits

It is worth noting that red blood cells transport oxygen to the various organs and regions of the body. When your body’s amount of red blood cells drops, you can suffer from anemia. In case you already have anemia, drinking large quantities of green tea can worsen your condition. To avoid this, moderate your intake of green tea and take foods rich in vitamin C. Recent research conducted on dogs indicates that taking green tea on an empty stomach can cause toxicity in the stomach, liver, and kidneys. While human studies have not been done, it is safer to ensure that you eat before drinking green tea to reduce the effects of this among other side effects of green tea.

However, the authors acknowledged that further human trials are necessary to confirm the effectiveness and safety of moringa in managing cardiovascular diseases. Two hours after eating, those who consumed moringa had lower blood pressure than those who did not. However, more clinical studies are necessary to confirm this finding in humans.

Common nut emerges as standout for lowering ‘bad’ cholesterol in 25-year review

However, compounds in green tea may interfere with how the body processes folate, which might raise the risk of preterm birth. Additionally, green tea leaves may contain heavy metals and pesticides, which may cause oxidative stress. This stress may harm the body cells, including those involved in reproduction, potentially increasing the chances of preterm birth.