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What the research describes
What published research examines about the compounds in functional tea — collagen peptides, tea polyphenols and the chai spices. Descriptions of studies, not promises about results.
Chai
Chai Spices
- Cardamom and Green Tea: The Pairing, and How to Brew ItWhy cardamom and green tea work together, how to brew the combination without bitterness, and what a cardamom green tea concentrate does differently.
- Cardamom Benefits: What the Research Actually DescribesA research-framed look at cardamom: the compounds studied, what the science does and doesn't show, and honest limits. Not medical advice.
Collagen
- Collagen for Hair and Nails: Evidence vs Wishful ThinkingA randomized trial reported faster nail growth with collagen peptides; hair evidence is far weaker. Here's what's supported and what isn't.
- Collagen for Joints: What the Trials Actually ShowTrials in athletes and active adults measured less activity-related joint discomfort with daily collagen peptides than placebo. The evidence and limits.
- Collagen for Skin: What the Research Actually ShowsTrials and a meta-analysis report greater skin hydration and elasticity with oral collagen over ~8 weeks. The realistic effect — and what it can't do.
- The Best Collagen Tea: Formats Ranked for Daily ConsistencyCollagen tea, powder, coffee add-ins, or bone broth — which is easiest to stick with? How they compare on effort, dose, and consistency.
Functional Botanicals
Matcha
Nutrition Science
- The Best Tea for Gut Health: What Research ShowsResearch on tea and the gut is still early and mixed. An honest look at black-tea polyphenols, green-tea catechins, ginger, and postbiotics.
- The Best Tea for Sleep: What the Research Actually DescribesNo tea is proven to put you to sleep. An honest look at chamomile, valerian, lavender, and lemon balm — plus the change with the most evidence.
Oolong
Rooibos
More topics
- IngredientsWhat is actually in the cup — collagen, black tea, the warming spices and botanicals — and what the research says about each.
- Teas & BlendsWhat to drink: chai, matcha, black, green, oolong, rooibos and functional blends — defined, compared and explained.
- Recipes & RitualsHow to prepare and when to drink — brewing guides, recipes and daily rituals that fit a busy morning.
- Healthy LivingEating well, functional nutrition and the everyday habits behind a healthier you.