Honest comparison
Green tea vs black tea
Same plant, different processing. Each has its place — and its season.
Quick answer
Neither is universally better. Green tea has slightly more evidence for aging outcomes; black tea has a longer, deeper cultural place in Persian life. Both are gentle allies.
| Green tea | Black tea | |
|---|---|---|
| Processing | Unoxidised — gentle heat only | Fully oxidised |
| Main polyphenol | EGCG (catechin) | Theaflavins |
| Caffeine per cup | ~30 mg | ~45 mg |
| Evidence | Strong for heart, moderate for brain aging | Moderate for heart; strong tradition, less trial data |
| Persian tradition | Rarer historically | The everyday tea of Persian homes |
One small step
Try one cup of green tea in the morning, one cup of black tea in the afternoon — for a week — and notice how each feels.