Sources
The research and guidance behind the nutrition information on our site. Numbered references link to the corresponding source below.
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Dietary Guidelines for Americans, 2020–2025
U.S. Departments of Agriculture and Health and Human Services. The guidelines report that over 90% of women and 97% of men consume less dietary fiber than recommended.
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IFIC Spotlight Survey: Americans’ Perceptions of Fiber & Whole Grains, February 2026
IFIC surveyed 1,006 U.S. adults in October 2025 and published the findings in February 2026. Of those surveyed, 29% reported eating under 20g of fiber daily and 37% were unsure of their intake—about two-thirds combined.
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MedlinePlus: Amino acids
U.S. National Library of Medicine. Explains that the nine essential amino acids must come from food and that the body uses amino acids to make proteins for tissue repair and other functions.
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Cleveland Clinic: Collagen
Describes collagen as accounting for about 30% of the body's total protein, its structural role in skin and connective tissues, and the natural decline in collagen production with age. These facts describe collagen in the body; they do not establish specific benefits from drinking PLURAL.