How long after turning vegetarian does anemia occur?

Why askng?: Why do you take the risk? Take multivitamin therapeutic once or twice daily for prevention. Vitamin B12 is important, might need to take a shot 500-1000 mcg every 3-6 months. Vegetarian food leads t also iron and minerals..... The time taken to be anemic is ill-defined since it depends on the type and quality and quantity of the vegetarian food. Be smart. Be wise. Prevent anemia from happening.

1 hour or 60 years: Depends on what you eat and other factors!