A type of flavonoid found in tea and chocolate may help lower blood pressure
Yes! A specific type of flavonoid called flavan-3-ols (a subclass of flavonoids) found in tea, cocoa (dark chocolate), berries, and apples has been linked to lower blood pressure in multiple studies. Here’s what the research says:
How Flavan-3-ols May Help Lower Blood Pressure:
- Improves Endothelial Function
- Flavan-3-ols boost nitric oxide production, which helps blood vessels relax and improves circulation.
- This reduces vascular stiffness, a key factor in hypertension.
- Reduces Oxidative Stress & Inflammation
- These compounds act as antioxidants, protecting blood vessels from damage caused by free radicals.
- Chronic inflammation is linked to high blood pressure, and flavan-3-ols help counteract it.
- May Support Healthy Blood Flow
- Some studies suggest they inhibit ACE (angiotensin-converting enzyme), similar to certain blood pressure medications.
Key Research Findings:
- A 2020 meta-analysis in Scientific Reports found that consuming 400–600 mg of flavan-3-ols daily led to significant reductions in systolic and diastolic blood pressure (about 2–4 mmHg lower).
- A 2023 study in Nature showed that people who ate cocoa-rich dark chocolate (70%+ cocoa) daily had improved arterial function within weeks.
- Green and black tea (rich in flavan-3-ols) are also associated with lower hypertension risk in long-term studies.
Best Food Sources of Flavan-3-ols:
Dark chocolate (70%+ cocoa) – ~50–100 mg per 10g square
Cocoa powder (unsweetened) – ~250 mg per tbsp
Green tea – ~150 mg per cup
Black tea – ~100 mg per cup
Berries (blueberries, strawberries) – Varies (lower than tea/cocoa)
Apples (with skin) – ~50 mg per medium apple
How Much Do You Need?
- 400–600 mg/day appears beneficial for blood pressure (e.g., 1 square dark chocolate + 2 cups green tea).
- Excess sugar/caffeine (in sweetened chocolate or tea) can counteract benefits, so opt for unsweetened or lightly sweetened versions.
Caveats:
- Flavan-3-ols help but aren’t a substitute for meds if you have severe hypertension.
- Effects are modest but meaningful (similar to the DASH diet or light exercise).
Adding dark chocolate (in moderation), unsweetened cocoa, or tea to your diet may gently support healthy blood pressure over time. Pair it with other heart-healthy habits (exercise, low sodium) for best results.
Reference:
https://www.sciencedaily.com/releases/2025/05/250514181644.htm
https://pmc.ncbi.nlm.nih.gov/articles/PMC6478304
Medications that have been suggested by doctors worldwide are available on below link