Switching to Vegan or Ketogenic Diet Rapidly Impacts Immune System Jan. 30, 2024 — Researchers have observed rapid and distinct immune system changes in a small study of people who switched to a ...
Dairy products: Milk, cheese, and yogurt are good sources of vitamin B12 for vegetarians. Fortified tofu: Some brands of tofu are fortified with vitamin B12, making it a versatile option for meals.