Are there benefits to the osteoarthritis supplements glucosamine and can join? Watch this

video in the next one to see what the science says. Global sales of glucosamine supplements is estimated at

$2 billion. Glucosamine supplements is estimated at $2 billion.

Glucosamine is a precursor to two of the major components of cartilage,

though at the marginal blood levels achieved by supplementation,

we would not expect it to contribute much to cartilage formation directly.

There are marked inconsistency in the clinical research literature

as to whether it works at all. The most potent predictor of trial results, industry funding.

Studies sponsored by the product makers themselves showed that their patented products

were beneficial, but independently funded studies showed glucosamine

had no effect.

This has raised serious concerns about publication bias, the suspicion that the glucosamine

industry quietly shelved rather than published any studies that didn't go their way to give

an overly rosy picture in the medical literature.

This is what led in part to the current American College of Rheumatology guidelines strongly recommending against the use of glucosamine.

The proscription against glucosamine is echoed by some expert consensus guidelines,

for example, the American Academy of Orthopedic Surgeons and Osteoarthritis Research Society international, but not others, such as the European

Society for Clinical and Economic Asperesis Osteoarthritis and Musculoskeletal Diseases,

which allows an exception for pharmaceutical-grade glucosamine. Only this patented so-called crystalline glucose

sold as a prescription-only drug in Europe has been decisively shown to improve osteoarthetic

joint pain or function, whereas the over-the-counter glucosomy supplements sold in the U.S.

offered mixed results with no overall effect, presumably because

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