Green Tea Extract (EGCG) for Belly Fat Reduction

Typical dose

Recommended dose

300–400 mg EGCG daily with food.

Expected timeframe

8–12 weeks within a calorie-controlled plan.

Protocol

form

Extract standardised for EGCG. Trials frequently used catechin-plus-caffeine combinations, and the caffeine appears to contribute much of the thermogenic effect

duration

12 weeks, with waist circumference measured at baseline and end

co factor

Take with food, never fasted. Evidence is mixed and the honest summary is that the effect is small and probably not clinically meaningful. Meta-analyses of green tea catechins for weight loss find average reductions of around 1-1.5 kg over 12 weeks versus placebo, with some trials reporting preferential reductions in visceral fat and waist circumference, and effects appear larger in Asian populations and in people with lower habitual caffeine intake. The mechanism - EGCG inhibiting catechol-O-methyltransferase, prolonging noradrenaline action and modestly raising energy expenditure and fat oxidation - is real but small, worth perhaps 60-100 kcal/day. Spot reduction of abdominal fat does not occur; visceral fat responds to overall energy deficit and exercise.

titration

Up to 500 mg/day of extract, but never above 800 mg/day of EGCG

starting dose

300 mg/day of extract with food, alongside a calorie deficit and resistance training

Less likely to help if