Babies ingest vital microbes during natural birth helping kick start their immune system when exciting from the mothers vagina. It also helps to get the babys b

Babies ingest vital microbes during natural birth helping kick start their immune system when exciting from the mothers vagina. It also helps to get the babys breathing started. The microbes that babies get in contact with during natural birth help form their gut microbes. Gut microbes are essential to human health. If we eat food from animals that have been given antibiotics or we take antibiotics, we mess with the gut microbe system that prevents us from getting sick. To clean environment is not good for humans. Ie with a little dirt our immune system is better. That is why for example people growing up on the country side has less allergy. https://www.wired.com/2014/04/missing-microbes-antibiotic-resistance-birth/ https://www.wired.com/2014/04/missing-microbes-antibiotic-re... The Normal Gut Microbiota: An Essential Factor in Health. Article https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3983973/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3983973/