Biome® Review 2026: Is This Gut Microbiome Weight Loss Supplement the Real Deal?
By Michele Jordan, Physical Education Professional & Wellness Educator | Updated March 2026
If you’ve been searching for an honest Biome® review, you’re in the right place. This is one of the most talked-about weight loss supplements of 2026 — and for good reason. Unlike most fat burners that rely on stimulants or appetite suppression, Biome® takes a completely different approach: targeting the gut microbiome as the root cause of stubborn weight gain.
I spent several weeks researching the science, the ingredients, the clinical studies, and real customer results before writing this review. Here’s my complete, honest breakdown.
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What Is Biome®?
Biome® (formerly known as LeanBiome) is a doctor-formulated weight loss supplement developed by Lean for Good® and co-created by Meghan See — a real person whose 240 lb weight loss story has been featured in national and international media, including an appearance on Red Table Talk with Jada Pinkett Smith.
The supplement is built around a breakthrough piece of Ivy League research showing that an imbalanced gut microbiome — specifically, a lack of certain “lean bacteria” strains — is a primary driver of belly fat, unexplained weight gain, and failed dieting. Biome® works by replenishing these strains while simultaneously supporting metabolic function through two clinically-studied plant extracts.
🔬 The Science Behind It
Research from institutions including Harvard and Cornell has found that the gut bacteria of lean people look fundamentally different from those of overweight people. Lean individuals tend to have higher populations of specific bacterial strains that regulate hunger hormones, reduce fat storage, and support metabolic rate. Biome® is the first supplement to combine nine of these clinically-proven “lean bacteria” strains with Greenselect Phytosome® — a patented, caffeine-free green tea extract — plus two plant extracts with clinical weight loss data behind them.
| Feature | Details |
|---|---|
| Format | Capsules |
| Core mechanism | Gut microbiome rebalancing + metabolic support |
| Probiotic strains | 9 clinically-studied “lean bacteria” strains |
| Guarantee | 180-day money-back |
| Average order value | ~$160 (indicates multi-bottle purchases) |
| Caffeine-free? | Yes — no stimulants |
| Non-GMO / Gluten-free | Yes |
| Award | ClickBank Diamond Award — top 1% of sellers |
Biome® Ingredients: What’s Inside?
This is the standout ingredient. Greenselect Phytosome® is a patented, next-generation green tea extract that uses Phytosome technology to dramatically increase absorption compared to standard green tea extracts. A double-blind clinical trial published in Alternative Medicine Review found participants using Greenselect Phytosome® lost significantly more weight than the diet-only control group — without any caffeine. The Phytosome delivery system is what makes this different from every other green tea supplement on the market.
This specific combination of two plant extracts has been studied in a double-blind, placebo-controlled clinical trial at the prestigious Assumption University in Thailand. Participants taking this blend lost an average of 5 lbs in just 2 weeks — compared to less than 1 lb in the placebo group. The mechanism involves reducing cortisol-driven fat storage and supporting healthy adiponectin levels, a hormone that regulates fat metabolism.
The core of Biome®’s approach. These nine strains were selected based on Ivy League research identifying bacteria consistently found in higher concentrations in lean individuals. Together they work to reverse gut dysbiosis — the bacterial imbalance associated with obesity — by crowding out fat-promoting bacteria and supporting the gut environment that enables healthy weight regulation. Key strains include Lactobacillus gasseri, shown in a Japanese clinical study to reduce abdominal fat by 8.5% over 12 weeks, and Lactobacillus rhamnosus, which has demonstrated specific benefits for weight loss in women.
Biome® Pros and Cons
✅ What We Like
- Addresses root cause — gut microbiome imbalance
- Patented Greenselect Phytosome® with clinical backing
- Dual plant extract blend clinically studied at Assumption University
- 9 lean bacteria strains backed by Ivy League research
- Completely stimulant and caffeine-free
- 180-day money-back guarantee — industry-leading
- ClickBank Diamond Award — top 1% of all products
- Low refund rate (indicates real results)
❌ What to Consider
- Only available online — no retail stores
- Best results require 90-180 days of consistent use
- Premium price at single-bottle rate
- Not suitable as a standalone solution without dietary awareness
Who Is Biome® Best For?
- People who have tried multiple diets and supplements without lasting results
- Anyone dealing with bloating, digestive issues, or unexplained weight gain
- Those who want a caffeine-free, stimulant-free approach to weight management
- Women who have noticed weight gain after pregnancy or hormonal changes
- People interested in gut health as a foundation for overall wellness
- Anyone who has recently taken antibiotics (which disrupt the gut microbiome)
Biome® Pricing (March 2026)
| Package | Price Per Bottle | Total | Best For |
|---|---|---|---|
| 1 Bottle (30-day supply) | ~$59/bottle | ~$59 | First try |
| 3 Bottles (90-day supply) | ~$49/bottle | ~$147 | Good results window |
| 6 Bottles (180-day supply) | ~$39/bottle | Best value | Recommended |
Given that meaningful gut microbiome changes require consistent use over 90-180 days, the larger packages align much better with realistic results expectations — and offer significantly better per-bottle value.
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Side Effects & Safety
Biome® uses clinically-studied probiotic strains and natural plant extracts with well-established safety profiles. A few things to note:
- Probiotic adjustment period: Some users experience mild bloating or digestive changes in the first 1-2 weeks as the gut microbiome shifts. This is a normal sign the probiotics are working and typically resolves quickly.
- Completely caffeine and stimulant-free: Safe for those sensitive to stimulants, including evening use.
- Pregnancy / nursing / medications: As with any supplement, consult your doctor before use if you are pregnant, nursing, or taking prescription medications.
This review is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any new supplement.
Biome® FAQ
⚖️ Our Final Verdict
Biome® stands out from the weight loss supplement market for all the right reasons: patented ingredients with clinical studies, a legitimate scientific mechanism (gut microbiome rebalancing), a ClickBank Diamond Award indicating sustained real-world results, and an industry-leading 180-day guarantee. If you’ve struggled with conventional weight loss approaches and haven’t addressed gut health, Biome® represents a genuinely different — and well-evidenced — path forward. The low refund rate reported by the company is perhaps the most convincing data point of all.
→ Try Biome® — Official SiteAffiliate link — we may earn a commission if you purchase. See disclosure above.
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Michele Jordan is a Physical Education professional specialized in Pilates and functional training. She writes about movement, wellness, and healthy aging at Nutra Global One. Read more: https://nutraglobalone.com/about-michele-jordan/