I've been on the lookout personally for more negative side effects (it's almost suspicious how little there are, though it varies by person to person), but also excited to hear of benefits.
Some of the benefits recently led 23andMe to get into GLP1s:
https://glp1.guide/content/23andme-gets-into-glp1/
They even a paper on some possible benefits with Alzheimers, though I think the research is in it's infancy. I think the plastic story is a bit more compelling though.