🍵 Green Tea Extract (EGCG): An Antioxidant for Metabolism and Skin
The compound that made green tea a "superfood"
Everyone has heard green tea is healthy. But behind that is a specific compound — EGCG (epigallocatechin-3-gallate). It's credited with antioxidant properties and effects on metabolism. Let's look at what science says.
What is EGCG
EGCG is the most active catechin of green tea. It's a polyphenol that neutralizes free radicals and is studied for many effects.
- Main catechin.
- Polyphenol.
- Antioxidant.
- Much studied.
Antioxidant
EGCG is a powerful antioxidant. It neutralizes free radicals that damage cells and speed up aging.
- Neutralizes radicals.
- Protects cells.
- Reduces oxidative stress.
- Against aging.
Metabolism
EGCG is studied for supporting metabolism and energy expenditure. It may gently help with weight control as part of lifestyle.
- Metabolism support.
- Energy expenditure.
- Weight control.
- Not a diet replacement.
Skin
EGCG protects the skin from oxidative stress and UV. It's studied for supporting youthful skin.
- UV protection.
- Skin antioxidant.
- Against aging.
- Youth support.
Longevity
EGCG is linked to longevity through reducing inflammation and oxidative stress — key aging factors.
- Less inflammation.
- Less oxidative stress.
- Cell support.
- Link to longevity.
Food sources
| Food | EGCG content | Comment |
|---|---|---|
| Green tea | ~50–100 mg/cup | Leaves |
| Matcha | High | Powder |
| White tea | Medium | Young leaves |
Practice
- Drink green tea daily.
- Extract 250–500 mg/day.
- Take with food.
- Not on an empty stomach — nausea possible.
- Lead a healthy lifestyle.
- Consult a doctor.
What is EGCG?
The most active catechin of green tea, a powerful antioxidant.
Does it help metabolism?
Studied; moderately supports energy expenditure.
How does EGCG affect the skin?
Protects from oxidative stress and UV.
How much to take?
Extract usually 250–500 mg a day.
Where to get EGCG?
Green tea, matcha, extracts.
Does it help lose weight?
Weakly; works only with diet and movement.
Is the extract safe?
In moderate doses yes; high may affect the liver.
When to take?
Morning or lunch, with food.
Does it disturb sleep?
If the extract has caffeine — don't take in the evening.
Who shouldn't?
With liver disease and caffeine sensitivity.