Marina Johnston M.D.

Recommended Articles

• What Is a Drug Interaction?

  IntroductionAccording to the Centers for Disease Control and Prevention, more than 20,000 deaths annually happen due to unintentional drug poisoning. Moreover, the US Food and Drug Administration stated that four or more prescribed medications are concurrently taken by 40 percent of Americans,...

• Is Stiff Neck Serious?

  Somebody calls you from behind and you turn your whole body instead of your neck? This is a clear sign of stiff neck! Most of us would have been in that awkward situation where you wish that you need not move that delicate part of your body. Issues with the neck arise mostly during physical...

• Anemia: Get the Facts

  Our body has three types of blood cells: white blood cells, red blood cells, and platelets. White blood cells (WBCs) or leukocytes are the type of cells that fights off infections in our body. The platelets work by helping our blood clot, and the red blood cells (RBCs) are the ones responsible for...

• What Are Hormones?

  IntroductionHormones are a special kind of chemical messengers in the body that are created by the endocrine glands. These chemical messengers control and coordinate complex processes in the body, such as growth, metabolism, fertility, and reproduction. Hormones can also influence the body's immune...

• Influenza B: What You Need to Know

  Influenza Influenza, also commonly called as the flu, is a highly contagious respiratory infection caused by viruses, particularly influenza A or influenza B. These viruses usually infect the throat, nose, and lungs. Although the flu causes mild symptoms in most people, it can also cause severe...

• 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...