Genetic diseases are disorders caused by abnormalities in an individual's DNA. These abnormalities can be inherited from one or both parents, or can occur spontaneously. Genetic diseases can affect many different parts of the body and can range from mild to severe in terms of symptoms and impact on health. These diseases are often caused by mutations in specific genes that lead to problems with protein production or function. Research in this area focuses on understanding the genetic basis of these diseases, developing diagnostic tests, and exploring potential treatments or cures. This field of study is important for improving our understanding of human health and developing personalized approaches to medical care.