When Scientists Study Nutrition, They Choose Thistle
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Real, whole-food meals used in controlled nutrition studies, delivered fresh and ready to eat
MEALS THAT MATTER
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We’re sure you’re going to love the results and peace of mind you’ll get with Thistle. It’s the kind of real, whole-food nutrition that has been selected for clinical research on gut health and inflammation.
If you’re curious what that actually feels like in real life, your first week is 40% off. At that price, many meals cost less than buying and preparing the same ingredients yourself. There’s no commitment required and you can cancel any time.
When Scientists Study Nutrition, They Choose Thistle
Real, whole-food meals used in controlled nutrition studies, delivered fresh and ready to eat
Thistle partnered with researchers at the University of California, Irvine to support a clinical study exploring how a high-fiber, plant-forward diet impacts the human gut microbiome. Participants following the Thistle dietary approach saw meaningful improvement in gut health in just 2 weeks.
Sources:
UCI 'Fiber Force' Study Finds High-fiber Diet Brings Significant Changes to Human Gut Microbiome (UCI School of Biological Sciences, March 2021)
High-Fiber, Whole Food Dietary Intervention Alters the Human Gut Microbiome but Not Fecal Short-Chain Fatty Acids (American Society for Microbiology, March 2021)
Thistle wasn’t chosen only because it’s convenient. It was chosen because of our research-backed standards and controlled, consistent delivery – something other meal services can’t do.
Why the Scientists Chose Thistle
Thistle vs. Alternatives
Selected by UC San Diego for Microbiome Study
Researchers at the UCSD School of Medicine chose Thistle as the meal provider for a clinical study examining how whole-food, high-fiber, high-polyphenol diets may support gut microbiome recovery and lower inflammation after colonoscopy. This study helps connect the dots between what we eat, how our gut microbiome responds, and the early factors that can help reduce the risk of chronic disease – giving researchers a clearer picture of how nutrition can shape long-term health.
Source:
Impact of Dietary Intervention on Inflammation and Microbiome Composition Post-Colonoscopy (UC San Diego Health, March 2025)
Thistle provides meals designed to meet the study’s nutritional parameters; UC San Diego independently conducts and analyzes the research. Thistle meals are not intended to diagnose, treat, cure, or prevent any disease. Research partnerships do not imply clinical outcomes for consumers.
Autopilot Your Diet
Fuel your journey to better health with functional nutrition. Each meal is dietitian-designed to help you stay nourished and strong, with 20-40g protein per dish.
Healthy Never Tasted So Good
Support a healthy gut with meals and juices loaded with fresh plants, fiber and prebiotics. Every bite promotes digestive comfort and balances your microbiome – Thistle is clinically proven to improve gut health as little as two weeks!
Boost Your Gut Biome
Our meals are crafted for sustained energy, packed with the micronutrients you need to thrive and without any of the stuff you don’t – no refined sugars, dairy, gluten, preservatives, or anything artificial.
Portion-Controlled & Nutrient-Dense
Thistle meals and juices have over a million 5-star reviews because our customers look forward to a flavorful menu delivered to their doorsteps every week – without any grocery shopping, meal prep, or dirty dishes.
Zero-Stress Deliciousness
Real, whole-food ingredients
No refined sugars or artificial sweeteners
No preservatives or additives
High fiber meals made with lots of plants
Science-backed nutrition standards
Ultra-processed shortcuts
Hidden sugars and sugar substitutes
Stabilizers and fillers
Low-fiber meals padded with protein and calories
Nutritional gimmicks and fads
The Thistle Nutrition Standard
Every meal is built to meet consistent nutrition targets designed for better health outcomes.
Protein: 20–40g+ per meal for fullness and sustained energy
Fiber: 10–15g per meal to support digestion, satiety, and microbiome health
Extraordinary nutritional diversity: 50+ unique plant ingredients each day and 2–4 cups of veggies per meal
Healthy fats: Omega-3 rich, whole-food sources for heart and brain health
Functional superfoods: Turmeric, greens, spirulina, naturally fermented ingredients, and lots of anti-inflammatory and antioxidant-rich dark greens and cruciferous vegetables
Balanced calories: 450–650 per entrée—no tracking required
What This Means for You
Better digestion
Less bloating
More stable energy
Improved fullness and satiety
Long-term gut health support
MEALS THAT MATTER
Selected by UC San Diego for Microbiome Study
Researchers at the UCSD School of Medicine chose Thistle as the meal provider for a clinical study examining how whole-food, high-fiber, high-polyphenol diets may support gut microbiome recovery and lower inflammation after colonoscopy. This study helps connect the dots between what we eat, how our gut microbiome responds, and the early factors that can help reduce the risk of chronic disease – giving researchers a clearer picture of how nutrition can shape long-term health.
Source:
Impact of Dietary Intervention on Inflammation and Microbiome Composition Post-Colonoscopy (UC San Diego Health, March 2025)
Thistle provides meals designed to meet the study’s nutritional parameters; UC San Diego independently conducts and analyzes the research. Thistle meals are not intended to diagnose, treat, cure, or prevent any disease. Research partnerships do not imply clinical outcomes for consumers.