Optimal health entails balancing the immune system – so it can respond appropriately, neither over- nor under-reacting. A healthy immune system enables the body to resist illness and recover rapidly from infections. Equally important, a balanced immune system does not overreact to normal stimuli; this overreaction can lead to environmental and dietary allergies and sensitivities. This talk will explain how homeopathy can be used to treat acute illnesses and reduce the susceptibility to disease by strengthening the immune system’s response. It will also describe how homeopathic remedies can be used to address allergies and sensitivities by moderating immune system overactivity. Consideration will also be given to how nutrition impacts immune system balance, and particularly how the digestive system affects immune health.