Researchers analyzed data from the Osteoarthritis Initiative to see how weight changes affect knee cartilage. The study included 164 people without radiographic osteoarthritis and 266 people with it, comparing those who lost weight to those who stayed the same weight. They measured cartilage thickness and pain levels over 24 months.
The main finding was that individuals who lost more than 5% of their body weight showed significantly less cartilage thinning compared to those who did not lose weight. This effect was seen in both groups, regardless of whether they had visible signs of osteoarthritis on X-rays. Pain scores also showed a trend toward improvement in those with osteoarthritis who lost weight, though this was not statistically significant.
No safety concerns were reported, as no adverse events or discontinuations occurred. However, the study did not find changes in other structural measures like joint space width. Readers should understand that while weight loss is linked to better cartilage outcomes in this data, more research is needed to confirm these results in broader populations.