The ability to fend off illness and disease depends on several factors, some of which are beyond our control, but the way we react to stress and the general health of our immune system are things we can influence. If we’re not able to change our response to stressors, we’ll find ourselves in a constant hormonal battle that will lead to serious health issues like hypertension, diabetes, and heart disease. The brain and the immune system are in constant communication in this delicate balance that can be disrupted by any kind of physical or emotional stress.