Neurodegenerative diseases, particularly Alzheimer's, challenge research due to their impact on the brain. Alzheimer's, the leading cause of dementia, poses a major hurdle to longevity. This book provides scientific and expert insights, clarifying that Alzheimer's and dementia aren't synonymous, debunking senile dementia, and highlighting preventive measures. It explores advances in understanding Alzheimer's, early detection biomarkers, and the promising role of technology and big data in enhancing future quality of life for those affected.