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).
Repackaging and selling free stuff is a business model that is hundreds of years old.
Occasionally, it's worth it, as the repackaging may come with some help understanding the material, or help in organizing it.
And I can sell you any GPL program I got for free, if you're willing to buy it...
- https://doi.org/10.1038/s41366-022-01211-2
- https://www.nature.com/articles/s41366-022-01211-2
Not sure why OP linked to this index. The article is 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.
So do most of their recent submissions. Presumably they have a vested interest in oa.mg selling access to papers.
They previously linked to citationsy.com which came from the same team.
> Please submit the original source. If a post reports on something found on another site, submit the latter.
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.
> Please don't use HN primarily for promotion. It's ok to post your own stuff occasionally, but the primary use of the site should be for curiosity.
(Of course by saying so, I'm breaking the guideline on insinuating the user is shilling.)