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.
Experiments with coffee plants offer some clues as to why evolution would reinvent caffeine so often. When coffee leaves die and fall to the ground, they contaminate the soil with caffeine, which makes it difficult for other plants to germinate. Coffee may thus use caffeine to kill off the competition. Coffee plants also use caffeine to ward off insects that would otherwise feast on their leaves and beans. At high doses, caffeine can be toxic to insects. As a result, insects have evolved taste receptors that help them avoid ingesting caffeine.