Yeah, nematodes are easier. I'm a biologist in a different field, but I have coauthored one publication in that field because I did the statistical analysis for them. I'm not terribly impressed with the anti-aging field overall. There's a lot of "let's just try tons of different chemicals and see which one causes some marginal improvement in a model organism." It strikes me as kind of a scattergun approach searching for a molecular fountain of youth that probably doesn't exist. I think they are on track to finding things that help people age more gracefully for a while and get a few extra years of good life. That's a worthy goal, but I just don't anticipate an earth-shattering "now we will live forever" type advance on the short timeline some futurists are hyping. The state of the field is less "these nanobots will reprogram your cells" and more "blueberries seem to be good for you."