Dr. Robert Marcial Guerra M.D.

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• What Are Night Sweats: Get the Facts

  What are night sweats?Night sweats are also called as nocturnal hyperhidrosis, which means excessive sweating during the night. Night sweats are episodes of continuous sweating at night even when the environmental temperature is very cold. Some people may sweat so extensively that they might find...

• 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...

• Sperm Cells Mimic Embryonic Stem Cells

  Sperm cells in the testicles are able to mimic the embryonic stem cells and can develop into any of the adult cells in the body. These germ cells, also called spermatogonial cells, belong to the adult stem cells and are the precursor of sperm cells.Based on a new study published in the online...

• Suffering from Constant Nausea? Here's What It Could Be

  IntroductionNausea is an unpleasant feeling that is usually experienced before vomiting. Constant or persistent nausea is characterized by feeling nauseous for more than 24 hours. Although nausea and vomiting often come together, vomiting may occur without feeling nauseous and nausea can occur...

• Is Hand Sanitizer Safe to Use?

  Hand sanitizer has alcohol, like ethyl alcohol, as the active ingredient to provide the antiseptic effect. In addition, it may also contain a variety of fragrances, glycerine, and water. Sanitizers containing alcohol are ideal for preventing most of the bacterial and viral infections. But these may...

• Different Blood Types and What They Mean

  The ABO (A, B, AB, or O) blood group system is used to classify different types of antibodies in the plasma and antigens in the red blood cells (RBCs). The ABO blood group and RhD antigen determine the type of blood that is a perfect match for blood transfusions. The four ABO blood groups are: ...