Dennis Johnson MD, PHD

Recommended Articles

• The History of Muscular Dystrophy

  What is muscular dystrophy?Muscular dystrophy is an inherited disorder, which is often characterized by a progressive type of muscular degeneration and weakness. There are several types of muscular dystrophy, wherein each type eventually leads to an increased disability, strength loss, and potential...

• What is Neurofibromatosis?

  Neurofibromatosis is a genetic disorder that affects the development of nerve cells and tissues in the body, leading to the formation of tumors in different parts of the nervous system. These tumors, also known as neurofibromas, may develop in the brain, spinal cord, along the nerves, or under the...

• Is Pancreatic Cancer Genetic?

  Is Pancreatic Cancer Genetic?Cancer is caused by a change in your genetic sequence. Genes are responsible for designing your body. Any alteration at that level will alter your body patterns.Cancer is an uncontrolled production of abnormal cells. Usually new cells are formed when your body needs...

• The Function and Structure of DNA

  Deoxyribonucleic acid or DNA is a molecule that contains the instructions an organism needs to develop, live and reproduce. These instructions are found inside every cell and are passed down from parents to their children.The Structure of DNADNA contains molecules called nucleotides, which possess a...

• What Causes Albinism?

  What is albinism?Albinism is a group of genetic disorders that cause little or no production of the natural pigment called melanin. The color of your skin, hair, and eyes depend on the type and amount of melanin produced by your body. Most individuals with albinism have sun sensitivity, which makes...

• Is My Child More Likely to Develop Autism if a Blood Relative Has Autism?

  Autism characterized by impaired social interactions reduced verbal and non-verbal communication and stereotyped behavior and activities. These symptoms appear in early childhood and impair or limit everyday functioning.Autism and geneticsResearchers believe that both environment and genetics play a...