The brain weighs 3 pounds. It is the central organ of the nervous system with the spinal cord makes up the central nervous system. The brain comprises of the cerebrum, the brainstem and the cerebellum. The cerebellum is divided into 4 lobes, the frontal temporal parietal, an occipital lobe. When my mother was diagnosed with Alzheimer's disease at the age of 57 in the year 2000. I didn't realize at the time how important it would be to understand the intricacies of the brain, A neurologist said that also Alzheimer's disease, which is the most common form of dementia, should be renamed. “Terminal failure of the brain” as any other, names are nebulous and do not show the severity of the disease to most individuals. As the person who has dementia the brain slowly dies. You are aware that they will change physically, but the reality of those changes leaves loved ones and caregivers in shock. At the end phase, individuals with dementia end up bedridden, unable to move and lose their ability to swallow. The phases beforehand are just as painful to injure, both to the individual and those that watch the individual. The day they suddenly cannot dress themselves or become confused or combative when you attempt to fix their shirt or pants that they have managed to put on backwards or when they try to articulate something, and it comes out in gibberish as they have forgotten how to speak. When they are in sure of who you are and you try to tell them, which leads to more confusion and sadness. They forget their grandchildren's names, become confused, angry or terrified because they're partially aware of who they were. Dementia has been around for over 100 years, however there is still no cure. Most people are not concerned with it until it affects them. And the scary thing about dementia is that it is asymptomatic for 10 years prior to diagnosis. It is not just an elderly disease, it affects people in their 30s, forties and 50s. I spent many years researching and speaking about dementia. And I lived with it from diagnosis to the end with my mother. I watched it slowly erase the person she was. This book dives into the different types of dementia and brain injuries, including chronic traumatic encephalopathy CTE, which is prevalent in athletes. The brain weighs 3 pounds, but it is the most significant part of the body.