4. Certain medications
Besides antibiotics, other meds also affect the gut–birth control pills being one offender.
5. Widespread Presence of and Overuse of Antibiotics
Antibiotics kill life. That is what their name means. They destroy not only the “bad guys”, but also the “good guys” in the gut. That’s why you often have gut issues after taking an antibiotic and need to restore the balance.
6. Toxins in the Environment and Home
Besides those listed above, there are other pollutants to consider like flame retardants, chemicals in cleaning compounds, air pollution that comes in from the outdoors or from appliances.
7. Limited time outdoors (limited exposure to soil and animals)
Exposure to animals and soil is a good thing as it exposes us to small amounts of soil based organisms that can be beneficial to the gut.
8. Over-sanitizing (ex. antibacterial soaps)