When your blood is tested, ask for your white blood cell count and specifically, your neutrophil. When your white blood cell count is low, do what you can to prevent infections. Know the signs of infection and what to do if you have them.
Like the face and body, ground coffee beans can be used to exfoliate the scalp. As a bi-weekly treatment, massage grounds into hair and scalp before shampooing, which can help to remove unwanted buildup. Just be aware that it might get a little messy. Warning: Coffee can stain lighter hair, so skip if you're a blonde.
Today, most processors use safe methods to remove caffeine. A few different techniques are available, and understanding them may help allay your concerns about coffee contaminants. Coffee beans are decaffeinated by softening the beans with water and using a substance to extract the caffeine. Water alone cannot be used because it strips away too much of the flavor. The goal is to extract the caffeine with minimal loss of flavor.