Human connection is also a microbial exchange: lasting social isolation can shrink gut microbial diversity, while a rich community life can enrich it.
Statins are among the rare drugs that may actually benefit the gut flora — linked to a richer, more balanced microbiota that partly offsets obesity-related dysbiosis.
Indoor plants and their soil modestly enrich the diversity of microbes you breathe at home—a small daily link to nature, not a therapy on its own.
The MetaSUB project shows transit surfaces carry mostly harmless skin and environmental microbes; commuting is a normal source of urban microbial diversity, not a hazard to sanitise away.