Green tea contains many beneficial plant compounds, especially catechin, a group of flavonoids with strong antioxidant properties. Of which, EGCG is a prominent ingredient that has the effect of inhibiting inflammation, neutralizing free radicals - factors that damage renal Tube cells.
EGCG significantly reduces the expression of inflammatory markers such as TNF-α and IL-6 in kidney tissue in the animal model with nephritis.
This suggests the potential of green tea in supporting the treatment of kidney diseases caused by inflammation and oxidative stress.
Diabetes and high blood pressure are the two leading causes of chronic kidney disease (CKD).
Regular consumption of green tea can reduce fasting blood sugar, lower cardiopulmonary blood pressure and improve the excretion index (eGFR) - an important factor reflecting kidney function.
In particular, green tea helps reduce AGE accumulation, products that are toxic to the kidneys during glucose metabolism. This is very meaningful for patients with type 2 diabetes, who are often at risk of progressing to diabetes.
Green tea has a mild diuretic effect thanks to its natural caffeine and polyphenols. This effect helps increase urine output, supporting the elimination of sodium and toxins from the body without losing too much potassium - an important factor in balancing electrolytes.
Patients with mild edema and little urination due to mild kidney failure have improved urinary tract condition after 4 weeks of drinking green tea per day (250 ml/time, 2 times/day).
However, people with end-stage kidney disease need to consult a doctor because caffeine levels still need to be limited.
Green tea can help prevent kidney stones - a common condition caused by deposits of minerals such as calcium oxalate in the kidneys.
Some polyphenol compounds in green tea have the ability to inhibit the crystallization of oxalate calcium, thereby reducing the risk of kidney stones in people with easily deposited mineral deposits.
People who drink green tea (≥4 cups/week) have an 18% lower risk of kidney stones than those who do not.
How to use green tea that is good for the kidneys:
Recommended dosage: 1-2 glasses per day (about 200-400 ml), avoid drinking too much that causes dehydration.
Use warm water 70-80°C to avoid breaking down EGCG compounds.
Avoid over- thickening or using tea to take medicine, which can affect the absorption of pharmaceutical substances.
