Tea is cultivated in approximately 30 countries but is consumed worldwide, although at tremendously different amounts. It’s the most widely consumed beverage aside from water with a per household worldwide intake of roughly 0.12 liter per year. Tea is manufactured in a few simple kinds. Green tea leaf is prepared in a way with regards to prevent the oxidation of green leaf polyphenols. Green tea extract has shown to be a natural product for the treatment of obesity, which exerts its activity by several ways: inhibition of lipases and stimulation of thermogenesis.
Thermogenesis is the process by which our bodies burn fat. Green tea extract, abundant with free radical cleansing and anti-inflammatory catechins, mainly epigallocatechin gallate (EGCG), is shown to reduce surrogate markers of vascular disease and lipid peroxidation, particularly LDL oxidation and malondialdehyde concentrations, in several in vitro, animal, and limited clinical studies. Green tea catechins, especially (-)-epigallocatechin gallate (EGCG), appear to have antiobesity and antidiabetic benefits.
Epidemiological observations in South east Asian countries reveal an inverse relationship exists among chronic consumption of green tea drinks and the incidence of cardiovascular situations. A few short-term scientific reports have documented its effects in attenuating biomarkers of oxidative stress and inflammation among those that smoke, and an ability to reduce postprandial lipemia in hypercholesterolemic subjects has also been indicated. Nevertheless, further investigations are essential to verify the possible role of green tea drinks and the safety of green tea supplements in lessening body fat, along with other biomarkers of coronary disease hazards.
The results of long-term daily oral consumption of 2-4 cups (500-1000 mL) of green tea leaf or EGCG-containing green tea extracts may mimic a few of the acute effects of EGCG. Studies show that oral consumption of green tea extract, EGCG, or EGCG-containing green tea extract can reduce serum and Cholesterol levels, increase High-density lipoprotein cholesterol, and lower serum blood sugar. Based on the in vivo outcomes of EGCG on body mass loss, body fat, serum lipid nutrients, thermogenesis, and fat oxidation and of the in vitro effects of EGCG on fat cell functions, long-term consumption of green tea may reduce the occurrence of weight problems and, perhaps, green tea herb elements such as EGCG could possibly be useful for managing obesity.
Sources: American Journal of Clinical Nutrition.