Dr. Robert Callahan MD

Recommended Articles

• An Appendectomy for Appendicitis

  Appendicitis is the inflammation of the appendix, a tube-like extension attached to the large intestine. The appendix has no known function, but one thing for certain is that one can live without it with no apparent consequences.Appendicitis is a life and death kind of matter and should be treated...

• What Is G6PD Deficiency?

  Introduction G6PD is actually an enzyme and G6PD deficiency occurs when there is a deficiency of this enzyme. This condition is not fatal, but in acute as well as in the chronic breakdown of red blood cells, it causes a spectrum of complaints such as jaundice. This condition is inherited and a...

• 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...

• Low-Density Lipoprotein

  IntroductionTo maintain good health, balanced cholesterol levels are quite important. The liver is an organ that detoxifies drugs and other foreign substances. It also stores glycogen, which the body utilizes for energy. Other important functions of the liver include metabolizing carbohydrates,...

• What Does Dark Stool Mean?

  A dark stool refers to a stool that is either black or dark red in color. You may pass dark bowel movements after consuming dark-colored foods or when an injury or bleeding is present in your gastrointestinal tract. If you pass dark or bloody stools, see your doctor immediately to rule out serious...

• What Is Acute Sinusitis?

  The inflammation of the sinuses and nasal membranes is what is referred to as sinusitis. The sinuses are the openings located in the facial bones that are linked to nasal openings. Mucous membranes that surround the sinuses are the same as those found in the interior of the nose. You probably have...