What if depression, anxiety, infertility, insomnia, heart disease, type 2 diabetes, Alzheimer’s, dementia, cancer and many other health conditions actually have the same root cause? As Dr. Casey Means explains in this groundbreaking book, nearly every health problem we face can be explained by how well the cells in our body create and use energy. To live free from frustrating symptoms and life-threatening disease, we need our cells to be optimally powered so that they can create 'good energy', the essential fuel that impacts every aspect of our physical and mental wellbeing. If you are battling signals of 'bad energy' inside your body, it is often a warning sign that more life-threatening illness may emerge later in life. This offers a new, cutting-edge understanding of the true cause of illness. It will help you optimize your ability to live well and stay well at every age.