Supplement
Tea catechins are antioxidant plant compounds found in green tea and other teas, and they influence how the body handles fat and sugar and how cells cope with oxidative stress. People mostly look at them for fat burning, and the evidence is moderate: studies found fat oxidation increased both during exercise and at rest. The evidence for weight loss is limited, with small gains of about 1 to 2 kg over 12 weeks, mostly in Asian populations and alongside caffeine.
- Updated
- How we grade
- Best evidence
- Grade B
- Conditions studied
- 4
- Outcomes
- 6
- Graded outcomes
- 0150
Evidence by condition
- Strong
- Moderate
- Limited
- Very limited
Obesityweight Loss
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Fat Oxidation Increased fat oxidation during exercise and at rest | Improves (the measure goes up) | Moderate effect | 400 people | |||
| Body Weight Meta-analyses: 1-2 kg weight loss over 12 weeks, especially in Asian populations and with caffeine | Improves (the measure goes down) | Small effect | 1,500 people |
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| LDL Cholesterol Modest reduction in LDL cholesterol | Improves (the measure goes down) | Small effect | 600 people | |||
| Blood Pressure Small reduction in blood pressure | Improves (the measure goes down) | Small effect | 800 people |
Blood Glucose
- Fasting Glucose: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Fasting Glucose Modest improvement in fasting glucose | Improves (the measure goes down) | Small effect | 400 people |
Nonalcoholic Fatty Liver Disease (NAFLD)
- Liver Enzymes: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Liver Enzymes Reduction in ALT and liver fat in NAFLD patients at moderate doses | Improves (the measure goes down) | Moderate effect | 200 people |
Key findings
- Fat OxidationImproves (the measure goes up)
- Body WeightImproves (the measure goes down)
- LDL CholesterolImproves (the measure goes down)
Shop the evidence-backed picks
Third-party tested Tea Catechins products, in the forms the graded studies used where we can match them.
- Grade B
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