1) Allergies are caused by an overreaction of the immune system to typically harmless substances called allergens. The author argues that a lack of good bacteria in the gut due to a Western diet high in sugar, fat, and processed foods can increase allergy risk by impacting the immune system.
2) Maintaining gut pH balance through eating more alkaline foods like fruits and vegetables helps support beneficial bacteria that train the immune system. A diet high in meat and acid-forming foods disrupts gut bacteria and pH balance.
3) Methane is a potent greenhouse gas that contributes to global warming. The largest source of human-caused methane is livestock farming. Reducing meat consumption would significantly decrease