Dr. Robert Mackey Callis M.D.

Recommended Articles

• The Importance of Circumcision

  Do You Need a circumcision?All male are born with a foreskin. It is a mass of skin that covers the glans of the penis. This is a covering that grows with time as the child grows. Circumcision is the surgical removal of the foreskin leaving the head of the penis exposded. Circumcision has been...

• What Is the Purpose of the Hormone Prolactin?

  What is prolactin?Prolactin or luteotropic hormone (LTH) is a peptide hormone, which promotes milk secretion in female mammals. This hormone also plays a significant role in pancreatic development, immune system regulation, and metabolism. When women become pregnant, their prolactin levels increase...

• What Type of Disorder Is Arthritis?

  Arthritis is a chronic disorder that affects the musculoskeletal system. A person diagnosed with arthritis can have very uncomfortable pain in one or more than one joint in their body. Sometimes, arthritis may cause disability. Arthritis can also be caused by bacterial or viral infections,...

• What Could Halitosis Mean?

  IntroductionHalitosis is also referred to as bad breath in layman’s term. Having bad breath can be embarrassing and may sometimes cause anxiety. Bad breath is commonly experienced by people. In fact, 1 in every 15 people experiences halitosis on a regular basis. Halitosis has a number of...

• What are the Signs and Symptoms of Testicular Cancer?

  Cancer is an unhealthy condition in which the cells of a part of the body rapidly divide and thrive without an apparent cause. These abnormally growing germ cells clump together, forming a buildup of tissue called a tumor that sets it apart from normal healthy tissue. When this happens in the...

• What Is Cyanosis and Why Does It Occur?

  IntroductionCyanosis is the medical term for a bluish discoloration of the skin, nails, toes, and mucous membranes. It is generally caused by low levels of oxygen in the blood. Normally, blood appears bright red when it is fully oxygenated. However, when blood does not have enough oxygen, it turns...