Flavanoids, flavanols, catechins, isoflavones and anthocyanins are all part of the polyphenolic family (polyphenols). The infographic below shows how this fit together in relation to each other.
The Polyphenolic Family
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Can Hyaluronic Acid improve joint health?
Hyaluronic acid is best known for skin hydration, but its most critical role is actually inside your joints. As a naturally occurring component of synovial fluid and cartilage, hyaluronic acid helps lubricate, cushion, and protect joints under mechanical stress. For those interested in hyaluronic acid for joint support, the science is compelling - particularly in ageing populations and those with osteoarthritis. What Is Hyaluronic Acid? Hyaluronic acid is a high-molecular-weight glycosaminoglycan found throughout connective tissues. It is especially concentrated in: Synovial fluid (joint lubricant) Articular cartilage Tendons and ligaments Skin and extracellular matrix In healthy joints, hyaluronic acid contributes to: Shock absorption Viscosity and lubrication Anti-inflammatory modulation Protection of cartilage surfaces With age and in osteoarthritis, both the concentration and molecular weight of Hyaluronic acid decline, reducing joint lubrication and resilience. How Hyaluronic Acid Supports Joint Function Improves Joint Lubrication - Hyaluronic acid gives synovial fluid its viscoelastic properties. It enhances: Boundary lubrication between cartilage surfaces Reduction in friction during movement Improved shock absorption When levels drop, joints become stiffer and more prone to discomfort. Supports Cartilage Health - studies indicate that hyaluronic acid can inhibit inflammatory mediators, including interleukins such as IL-1β and tumor necrosis factor-alpha (TNF-α), which are elevated in osteoarthritis. Hyaluronic acid has been shown to reduce these pro-inflammatory cytokines in both serum and joint synovial fluid, helping to reduce joint swelling and pain in osteoarthritis Modulates Inflammation - Hyaluronic acid appears to regulate inflammatory pathways within the joint capsule. Some studies indicate it can: Reduce prostaglandin production Decrease matrix metalloproteinase (MMP) activity Support overall joint homeostasis This makes it particularly relevant for individuals with age-related joint stiffness, where joint supplements can provide additional support. Hyaluronic Acid Supplementation: Does It Work? While injectable Hyaluronic acid has been used in clinical settings for decades, oral supplementation has gained strong interest too. Research suggests orally ingested hyaluronic acid can not only be absorbed by the gut and distributed to connective tissues via systemic circulation but can also be broken down into smaller fragments that stimulate the body's own production of hyaluronic acid production. Animal and human studies have demonstrated measurable physiological effects. Several controlled trials support the role of oral Hyaluronic Acid in joint comfort and mobility: A double-blind, placebo-controlled study in adults with knee discomfort found that Hyaluronic Acid supplementation (80–200 mg/day) significantly improved knee pain scores compared with placebo over 8–12 weeks. Another trial showed improved joint function and reduced discomfort during movement in adults under 70 with mild knee osteoarthritis. A meta-analysis of oral HA supplementation concluded that it may provide modest but clinically meaningful improvements in pain and function. Dosage & Forms Most human studies use: 80 mg – 240 mg per day Often in combination with: Vitamin C Collagen Glucosamine Chondroitin GCM Lower molecular weight forms may improve absorption, though both forms show benefit. Who May Benefit Most? Adults 40+ experiencing joint stiffness Active individuals with high joint loading Individuals with early-stage osteoarthritis Those seeking a non-NSAID joint support option Conclusion Hyaluronic acid is not just a skincare ingredient - it is a fundamental structural component of joint health. Clinical research supports its role in improving joint comfort, mobility, and overall function, particularly in ageing populations.
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