A randomized, double-blind study reports measurable improvements in skin moisture, barrier integrity and elasticity after daily supplementation with partially hydrolyzed guar gum, reinforcing evidence of a gut-skin connection.
By yourNEWS Media Newsroom
New clinical research conducted during winter months in Tokyo indicates that a specific prebiotic fiber may improve skin hydration and strengthen barrier function when taken daily. The findings contribute to growing scientific interest in the relationship between gut health and skin physiology, often referred to as the gut-skin axis.
The 12-week study was designed as a randomized, double-blind, placebo-controlled trial involving 70 healthy adults, primarily women in their mid-40s. Participants were assigned to consume either five grams per day of partially hydrolyzed guar gum (PHGG) or a placebo. Neither researchers nor participants knew which group received the active supplement, minimizing bias.
PHGG is derived from guar beans and processed into a highly soluble, easily digestible form. Unlike some fiber supplements, it is formulated to reduce gastrointestinal discomfort, making it suitable for regular use.
Researchers evaluated objective skin parameters, including stratum corneum hydration — a measurement of water content in the outermost skin layer — and trans-epidermal water loss (TEWL), a key indicator of barrier strength. Lower TEWL values reflect improved moisture retention and barrier integrity.
After six weeks, the group taking PHGG demonstrated a 4% to 8% increase in skin hydration across measured sites, including the cheek, forearm and back. TEWL decreased by 12% to 17%, indicating stronger barrier performance. The placebo group did not experience comparable changes.
By week 12, additional improvements were recorded in measurements of skin viscoelasticity, which relate to firmness and elasticity. These findings suggest potential effects beyond surface hydration, possibly involving structural components such as collagen.
Participant questionnaires mirrored the objective data. Individuals in the fiber group reported reduced sensations of dryness and improved overall skin comfort compared to those receiving placebo.
Researchers proposed two primary mechanisms for the observed effects. First, as a soluble fiber, PHGG has water-binding properties that may support systemic hydration balance. Second, PHGG functions as a prebiotic. Because it is not digested in the upper gastrointestinal tract, it reaches the colon intact, where it is fermented by beneficial gut bacteria.
This fermentation process produces short-chain fatty acids (SCFAs), compounds associated with reduced inflammation, strengthened intestinal barrier function and enhanced nutrient absorption. Improved absorption of vitamins and minerals may indirectly support skin repair and collagen production.
The findings align with broader research examining guar fiber’s systemic effects. A separate 12-week study in elderly participants reported that five grams of guar fiber daily was associated with improved visual memory, reduced morning sleepiness and increased energy levels. These effects have also been linked to SCFA production and the gut-brain axis.
Investigators note that many adults consume significantly less than the recommended daily fiber intake of 25 to 38 grams. Addressing this dietary gap through well-tolerated supplementation may support multiple physiological systems.
“The gut-skin axis connection is a bidirectional link where the health of the gut directly influences the health of the skin and vice versa,” said BrightU.AI’s Enoch. “Stress, diet and inflammation in one system can create issues in the other, such as gut problems leading to skin conditions. Nourishing this connection with specific nutrients can simultaneously benefit both organs.”
Researchers emphasized that the findings do not replace topical skincare practices but suggest an internal, nutrition-based strategy to complement them. By improving the body’s inherent moisture retention and barrier resilience, the study highlights a systemic approach to addressing seasonal skin dryness.
Watch and learn how a healthy gut is equal to glowing skin.
This video is from the S S R TRENDS channel on Brighteon.com.
Source: Natural News
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