Actual link (full text article available for free)-- <a href="https://www.nature.com/articles/s41366-022-01211-2" rel="nofollow">https://www.nature.com/articles/s41366-022-01211-2</a> .<p>oa.mg appears to be some sort of search aggregator that wants you to buy the article for $17 even though it's open access (freely available).
The link should be changed to the DOI or a direct link to the journal article:<p>- <a href="https://doi.org/10.1038/s41366-022-01211-2" rel="nofollow">https://doi.org/10.1038/s41366-022-01211-2</a><p>- <a href="https://www.nature.com/articles/s41366-022-01211-2" rel="nofollow">https://www.nature.com/articles/s41366-022-01211-2</a><p>Not sure why OP linked to this index. The article <i>is</i> Open Access, yet this intermediary site has a prominent "Buy article PDF →" link at the top which tries to sell it for $17. OA.mg seems like some kind of scam.
This might point as BMI not being the best metric to define obesity.<p>I bet people with high BMI but low fasting glucose and low c-reactive protein are mostly athletes, people who weight a lot due higher muscular weight. It wouldn't be surprising they are healthier.