If one were to look at human biochemistry over time, modern tech has increased average life-spans, but we've done so at the expense of quality of life. Take the

If one were to look at human biochemistry over time, modern tech has increased average life-spans, but we've done so at the expense of quality of life. Take the 'ultra-pasteuraization' process of milks as an example, it's massively reduced gut flora variety. They are selling expensive pills with probiotic entities that should be "free" with food we consumed for centuries. We went overboard on the sterilization. I just bought into a cattle herd so I could buy raw milk (which Europeans never lost access to, so we can compare notes). The microbiome manifests itself whether one is on Earth or not, and whether one wants it to or not. Its composition, however, will vary based on the food consumed. Microorganisms are quite prevalent in the atmosphere whether they are wanted or not; that's how me making my own sauer kraut is possible.