Which blood cell eats foreign things in the body?

The blood cell that primarily consumes foreign substances in the body is the macrophage, a type of white blood cell. Macrophages are part of the immune system and play a crucial role in identifying, engulfing, and digesting pathogens, dead cells, and other debris. They help protect the body from infections and facilitate tissue repair. Other immune cells, such as neutrophils, also participate in this process but macrophages are particularly effective in long-term defense and cleanup.