There are multiple ways you could decrease exposure such as eating less food that have microbial communities in them. For instance, reduce your intake of yogurt or kimchee since these are fermented foods which contain a healthy amount of microbes. Washing your hands properly will reduces this for obvious reasons. Also, depending on how you shower and bathe. Rinsing your body versus scrubbing with soap until it’s foamy can decrease your exposure. Your environment, depending on where you work or how you live. You might be very clean versus one of your friends who is not as clean. That has an effect on your microbiome.
