Joint support evidence brief
Oral hyaluronic acid has some knee-pain data, mostly in osteoarthritis or knee-discomfort populations, but little direct gym-performance relevance.
Knee-pain RCTs suggest possible symptom support; there is no direct evidence for gym performance or cartilage rebuilding.
Study products vary by molecular weight, source, and whether HA is combined with glucosamine or chondroitin.
Cartilage rebuilding, injury prevention, and recovery acceleration claims are not supported for healthy lifters.
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The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
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