Cover story · Roundup
The Best Greens Powder (2026): Superfood Powders Ranked on Testing and Transparency
The best greens powder picks, ranked on batch testing, lead disclosure and label transparency. Top-ranked: Kaged Organic Greens Elite.
Read the comparison →
Reviews
Independent, hedged, cited
The Encyclopedia
152 entries across 14 categories
See the full superfoods list, A to Z
From the Blog
Guides, science, recipes
science
What Is a Superfood? The Meaning, the Marketing and the Evidence
What is a superfood? A marketing label with no legal or scientific definition. Where the word came from, how it is regulated, and what the evidence shows.
guides
Chia Seeds vs Flaxseed: Omega-3, Fiber, and Which to Choose
Chia seeds vs flaxseed compared per ounce from USDA data: ALA omega-3, fiber type, lignans, minerals, weight-loss trials, and why flax has to be ground.
guides
How to Take Ashwagandha for Sleep and Anxiety: A Practical Guide
Ashwagandha for sleep and anxiety: the doses trials used (120-600 mg), when to take it, how long to try it, and who should avoid it.
Every recommendation is anchored in the underlying encyclopedia entry and hedged by the medical disclaimer. Manufacturers do not pay for coverage — see the affiliate disclosure.