Last verified: 41 days ago
Stevia
Also known as: Stevia rebaudiana, steviol glycosides, rebaudioside, stevioside, Reb A, Reb M
Evidence under review. — Not yet rated
Natural zero-calorie sweetener that lowers blood sugar spikes vs. sugar and appears safe for gut health.
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What it does
Stevia is a plant-derived, zero-calorie sweetener made from compounds called steviol glycosides extracted from the Stevia rebaudiana plant. When used in place of sugar, it produces lower blood...
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Evidence quality
Evidence base hasn't been formally rated yet. See research below.
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Clinical dose
No established dose from provided studies; ADI established at 4 mg/kg body weight/day per regulatory review
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Found in
Huel Black Edition, Kaged Whey Protein Isolate, Dymatize ISO100 Gourmet Chocolate and 17 more
What the Science Says
Stevia is a plant-derived, zero-calorie sweetener made from compounds called steviol glycosides extracted from the Stevia rebaudiana plant. When used in place of sugar, it produces lower blood glucose and insulin responses after meals — a meaningful benefit for people managing blood sugar. It does not appear to disrupt the gut microbiome or oral bacteria in the way sugar does, and animal studies suggest it causes less organ stress than other sweeteners like aspartame, though long-term human safety data remain limited.
What It Doesn't Do
Won't help you lose weight on its own — studies show no significant difference in body weight vs. sugar over 4 weeks. Doesn't eliminate appetite or hunger any better than sugar does. The 'fermented stevia' health hype is based almost entirely on lab and animal studies — no solid human trials yet. Not proven to cure diabetes or replace medication. Doesn't fully eliminate the bitter aftertaste that makes it less palatable than sugar.
Evidence-Based Benefits
Stevia is a plant-derived, zero-calorie sweetener made from compounds called steviol glycosides extracted from the Stevia rebaudiana plant. When used in place of sugar, it produces lower blood glucose and insulin responses after meals — a meaningful benefit for people managing blood sugar. It does not appear to disrupt the gut microbiome or oral bacteria in the way sugar does, and animal studies suggest it causes less organ stress than other sweeteners like aspartame, though long-term human safety data remain limited.
Moderate EvidenceEffective at: No established dose from provided studies; ADI established at 4 mg/kg body weight/day per regulatory review
Source: auto-research
Absorption & Bioavailability
Poor (as a sweetener) — steviol glycosides are not absorbed in the upper gut; they are broken down by gut bacteria into steviol in the colon. This is why stevia has negligible calories. Bioavailability of any active metabolites depends heavily on individual gut microbiome composition.
Red Flags to Watch For
- Most exciting health claims (anticancer, liver protection, gut modulation) come from animal or in vitro studies — not human trials
- One rat study found stevia induced hyperglycemia, oxidative stress, and organ dysfunction at chronic doses — human relevance is unclear
- Fermented stevia products are being marketed with health claims that have no human clinical trial support
- Stevia is often combined with other sweeteners (e.g., sucrose/stevia blends) in studies, making it hard to isolate stevia's effects alone
- Bitter aftertaste may lead manufacturers to add flavor modifiers or other additives — check ingredient labels carefully
Products Containing Stevia
See how Stevia is used in these analyzed products:
Huel Black Edition
Supplement
Kaged Whey Protein Isolate
Supplement
Dymatize ISO100 Gourmet Chocolate
Supplement
Naked Nutrition Grass Fed Whey Protein Powder
Supplement
Nuun Sport
Supplement
Earth Fed Muscle Whey Back Vanilla
Supplement
True Nutrition Flavor Packs (50g)
Supplement
Muscle Feast 100% Whey Protein
Supplement
Thorne Amino Complex Berry Powder NSF
Supplement
KAL Magnesium Chewables
Supplement
Origin Nutrition Daily Plant Protein (Vanilla)
Supplement
Ryno Power Premium Plant-Based Protein Powder
Supplement
Dose & Co Pure Collagen Peptides Peach
Supplement
Ultima Replenisher - Lemon Black Tea
Supplement
310 Lemonade - Peach Pear
Supplement
Huel Daily Greens
Supplement
Natrol Sleep & Restore Gummies
Supplement
Snapsupplements
Supplement
Wild Society Clear Whey Isolate with Electrolytes
Supplement
Lean Plant Protein by ONE SOL™
Supplement
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-11