Benefits of Green Tea And Its Side Effects

Green tea offers several potential health benefits. Here we are going to discuss more details. 

Benefits of Green Tea

May support focus and attention

Green tea contains a number of natural stimulants, including caffeine, which although not at the same levels as that found in coffee, may still help maintain alertness and focus.

May promote calm

Green tea is a source of the amino acid L-theanine, which has a relaxing effect; it does this by increasing mood-enhancing brain chemicals including GABA, dopamine and serotonin.

May protect the brain

The beneficial polyphenols of green tea may help slow the damaging effects of aging on the brain.

May boost metabolism

Research suggests that green tea may exert a small weight loss in overweight or obese people. This is thought to be thanks to the natural thermogenic properties provided by caffeine, and by the plant compounds such as catechins.

May support blood sugar control

Studies suggest green tea may improve insulin sensitivity and as a result have a beneficial effect on blood sugar management.

May reduce diabetes risk

Tea polyphenols have the ability to inhibit digestive enzymes like lactase and delay the uptake of glucose (sugar) in the gut, this has led some studies to conclude that a consistent intake (over a lifetime) of polyphenols from the likes of green tea may be as effective as some medication in reducing the risk of diabetes; however, more studies are needed.

May reduce the risk of heart disease

Research suggests green tea is a useful beverage for helping to reduce the risk of heart disease and associated conditions, such as stroke. One way it may help is in its beneficial effects on cholesterol management.

May support bone health

Green tea may help maintain bone density and as a result reduce the risk of fracture. The protective effect is thought to be thanks to the tea’s polyphenol content.

May improve gut health

Plant compounds like polyphenols, including those from tea, pass unabsorbed to the large intestine where they are broken down by gut bacteria. In this way they provide a source of fuel for the beneficial bacteria that reside in this part of the gut, allowing them to thrive and diversify and helping to improve gut function and modify the immune system.

Green Tea Side Effects

Green tea, while generally considered safe in moderation, can have side effects, especially related to its caffeine content and other compounds. Some potential side effects of green tea include:

Stomach Problems: Green tea may cause stomach irritation, acid reflux, constipation, and nausea, especially when brewed too strongly or consumed on an empty stomach. Excess acid from tannins in green tea can lead to digestive issues.

Headaches: Green tea can trigger headaches in certain individuals, particularly those sensitive to caffeine. People with migraines or daily headaches should be cautious with green tea consumption.

Sleep Issues: The caffeine in green tea can disrupt sleep patterns for individuals sensitive to caffeine. Chemical compounds in green tea can interfere with the release of sleep-inducing hormones like melatonin, potentially affecting sleep quality.

Other Side Effects: Green tea can also lead to problems like irregular heartbeat, worsened diarrhea, increased eye pressure (glaucoma), elevated blood pressure, and potential liver damage in rare cases. It may interact with certain medications and conditions, impacting their effectiveness or worsening symptoms.

To minimize the risk of side effects, it's advisable to consume green tea in moderation, especially for individuals sensitive to caffeine or those with specific health conditions. Consulting a healthcare provider before consuming green tea, especially in extract form or in high concentrations, is recommended to ensure safety and avoid potential adverse reactions.