Here's the Science Behind marrō
At marrō, we believe transparency matters. While individual results may vary, the ingredients in marrō, including protein, collagen, amino acids, and electrolytes (both naturally occurring in bone broth and, for some of our electrolytes, added by us for additional benefits), are supported by a growing body of scientific research. Below are links and short summaries of peer-reviewed studies that explore how these nutrients may support gut health, recovery, hydration, and overall wellness. We are stoked that you are looking to further understand the benefits of including marrō as part of your daily wellness ritual!
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Study: Matar A, Abdelnaem N, Camilleri M. Bone Broth Benefits: How Its Nutrients Fortify Gut Barrier in Health and Disease. Digestive Diseases and Sciences. 2025 Jun;70(6):1951–1961.
Abstract Summary: A comprehensive review examining how amino acids and minerals present in bone broth may enhance intestinal barrier integrity, reduce inflammation, and improve nutrient absorption.
Link: https://pubmed.ncbi.nlm.nih.gov/40180691/
Study: Mar-Solís LM et al. Analysis of the Anti-Inflammatory Capacity of Bone Broth in a Murine Model of Ulcerative Colitis. Medicina (Kaunas). 2021;57(11):1138.
Abstract Summary: Bone broth administration reduced inflammatory markers including IL-1β, IL-6, and TNF-α and alleviated tissue damage in mice. .
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Study: Proksch E et al. Oral supplementation of specific collagen peptides improves skin elasticity and hydration. Skin Pharmacology and Physiology. 2014.
Abstract Summary: Collagen peptide supplementation significantly improved skin elasticity and hydration.
Link: https://pubmed.ncbi.nlm.nih.gov/23949208/
Study: Hexsel D et al. Oral supplementation with specific bioactive collagen peptides improves nail growth. Journal of Cosmetic Dermatology. 2017.
Abstract Summary: Participants experienced increased nail growth rate and reduced brittleness.
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Study: Cruzat V et al. Glutamine: metabolism and immune function. Journal of Nutrition. 2018.
Abstract Summary: Glutamine serves as a fuel source for immune cells and supports immune regulation.
Link: https://pubmed.ncbi.nlm.nih.gov/29955760/
Study: Calder PC. Amino acids and immune function. British Journal of Nutrition. 2020.
Abstract Summary: Specific amino acids influence immune cell activation and inflammatory signaling.
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Study: Jendricke P et al. Specific collagen peptide supplementation improves body composition. Nutrients. 2019.
Abstract Summary: Collagen supplementation improved fat-free mass and strength with resistance training.
Link: https://www.mdpi.com/2072-6643/11/8/1781
Study: Shaw G et al. Vitamin C–enriched gelatin supplementation augments collagen synthesis. American Journal of Clinical Nutrition. 2017.
Abstract Summary: Gelatin supplementation increased collagen synthesis following exercise.
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Study: Maughan RJ et al. Water and salt balance in exercise. Journal of Sports Sciences. 2007.
Abstract Summary: Sodium plays a critical role in maintaining hydration during and after exercise.
Link: https://pubmed.ncbi.nlm.nih.gov/20175429/
Study: Nielsen FH. Magnesium deficiency and increased inflammation. Journal of Nutrition. 2010.
Abstract Summary: Magnesium contributes to muscle function, hydration balance, and inflammatory regulation.
Please note that the information provided on this page is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Statements regarding dietary ingredients have not been evaluated by the Food and Drug Administration. Individual results may vary. marrō is a food product and should be consumed as part of a balanced diet and healthy lifestyle. Also, our founder is a lawyer, so he made us include this disclaimer lol :-)