It's just a correlation, no? Probably grip strength is just a decent indicator for overall health. Whereas the implication of the article is that sitting around

It's just a correlation, no? Probably grip strength is just a decent indicator for overall health. Whereas the implication of the article is that sitting around squeezing grip strength trainers will somehow reduce your chance of disability / heart disease / death. Article also didn't link an actual study (always a bad sign), just some stub article. I did find this, apparently by the same authors, on a quick search; grip strength is lower in diabetics: https://pubmed.ncbi.nlm.nih.gov/26232901/ https://pubmed.ncbi.nlm.nih.gov/26232901/