Answer:
They protect you against illness and disease, they are also part of the immune system.
Explanation:
They flow through your bloodstream to fight viruses, bacteria, and other foreign invaders that threaten your health.
When you get sick, your body makes more white blood cells to fight the bacteria, viruses, or other foreign substances causing your illness. This increases your white blood count
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Anemia can be caused by a great amount of things. The most common reason is through iron deficiency, which is linked to other illnesses that cause anemia. Or, through malnutrition where the patient is not getting the right amount of vitamins or minerals in their diet. The protein hemoglobin contains iron, which is why the hemoglobin levels drop at times when there is anemia
