According to Harvard T.H. Chan School of Public Health (USA), green tea contains catechin, an antioxidant compound that can help reduce inflammation, support cardiovascular health and contribute to protecting cells from the effects of free radicals. Some studies also show that drinking green tea in moderation can help control weight and improve alertness thanks to natural caffeine content.
Green tea can also help improve brain function and support metabolism. However, abusing green tea or drinking it at the wrong time can have the opposite effect.
Many people have a habit of drinking green tea on an empty stomach to "detoxify" or lose weight quickly. This can cause irritability, stomach discomfort and increase the risk of digestive irritation in sensitive people.
In addition, drinking too much green tea during the day can cause the body to absorb too much caffeine, causing insomnia, palpitations or rapid heartbeat. Experts recommend that adults only drink about 2-3 cups of green tea per day and limit consumption in the evening.
Another note is that green tea can affect iron absorption if drunk immediately after meals. Therefore, people at risk of anemia should drink it at least 1-2 hours before meals.
Doctors encourage people to choose pure green tea, limit bottled tea containing a lot of sugar. Combining green tea with a healthy diet, getting enough sleep and exercising regularly will bring better health benefits.
