What is Blue Tea?
Blue tea is an herbal infusion from the blue petals of the Clitoria ternatea, or butterfly pea flower. Unlike traditional teas from Camellia sinensis, blue tea is naturally caffeine-free. Its blue color comes from anthocyanin pigments, also found in blueberries. In Southeast Asia, it's used in drinks and as a natural food dye.
Health Benefits Supported by Science
Research on blue tea's health effects is primarily based on animal and lab studies. Benefits are linked to its antioxidants.
Rich in Antioxidants
Blue tea is high in antioxidants like anthocyanins, which combat free radicals that cause oxidative stress and contribute to chronic diseases.
Promotes Brain Health
Animal studies suggest butterfly pea flower extract may improve memory and cognitive function by potentially increasing acetylcholine. It may also reduce stress and anxiety.
Aids Skin and Hair Health
The antioxidants and flavonoids in blue tea may stimulate collagen production for skin elasticity and increase blood flow to the scalp for hair growth. A 2021 study showed butterfly pea extract improved skin hydration.
Potential Anti-Diabetic Properties
Some research suggests blue tea might help regulate blood sugar by inhibiting carbohydrate-digesting enzymes, potentially reducing post-meal sugar spikes. Human studies are conflicting.
Supports Heart Health
Studies suggest blue tea may benefit heart health by improving blood pressure and cholesterol. Animal studies indicate it may widen blood vessels and potentially prevent blood clots.
Potential Risks and Considerations
Blue tea is generally safe in moderation, but consider these points:
- Digestive Issues: Excessive amounts may cause nausea, stomach aches, or diarrhea.
- Pregnancy and Breastfeeding: Avoid during pregnancy and breastfeeding due to lack of research.
- Drug Interactions: May interact with medications like blood thinners. Consult a doctor if taking medication.
- Seed Toxicity: Butterfly pea seeds contain oils that can cause vomiting or diarrhea, especially in children.
Blue Tea vs. Green Tea: A Comparison
Here's a comparison to help choose:
| Feature | Blue Tea (Butterfly Pea) | Green Tea |
|---|---|---|
| Caffeine | Naturally caffeine-free | Contains caffeine (~25-40 mg per cup) |
| Antioxidants | High (anthocyanins, flavonoids) | High (catechins, EGCG) |
| Best For | Relaxation, skin/hair health, evening consumption | Energy boost, metabolism, morning focus |
| Taste | Mild, earthy, with floral notes | Grassy, vegetal, sometimes slightly bitter |
| Color | Vivid blue, turns purple with lemon | Pale green |
How to Prepare and Enjoy Blue Tea
To make blue tea:
- Boil 1 cup (240 mL) of water.
- Add 1 teaspoon (or 5-6 dried flowers) of butterfly pea flowers.
- Steep for 5-10 minutes.
- Strain the flowers.
- Drink hot or cold.
Add lemon juice for a color change to purple. Honey, mint, or lemongrass can enhance flavor. For more on its functional properties, see this research: A Commercial Potential Blue Pea (Clitoria ternatea L.) Flower Extract Incorporated Beverage Having Functional Properties
Conclusion
Blue tea offers potential health benefits due to its high antioxidant content, including improved cognitive function, skin health, and stress reduction. It's a caffeine-free alternative to traditional teas, suitable for evening consumption. However, consume in moderation and be aware of potential side effects and interactions, especially for pregnant or breastfeeding women. More human studies are needed to fully validate traditional claims. Blue tea can be a healthful and enjoyable addition to your routine.
