Dr. David Ayrton Johnson MD

Recommended Articles

• Oliguria

  Oliguria is a medical term used when referring to a decreased urine output. Oliguria is considered when a person’s urine output is less than 400 mL in a 24-hour period. When it comes to infants, oliguria occurs when the urine output is less than 0.5 mL/kg/hr for 24 hours. Anuria is the absence...

• Do I Have a Vitamin D Deficiency?

  If you are a person who does not get adequate exposure to sunshine and also fails to have foods rich in it vitamin D, deficiency is the end result. This is very common in vegetarians, as this vitamin is mostly present in fish and eggs. Many products are now fortified with this vitamin to reduce 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...

• Obesity & Sleep Disorders, Affect Child's Ability to Learn

  A new study has shown that weight, sleeping disorders, and inability to learn are all linked with each other in children. A child who is overweight and who does not get enough sleep may have difficulty learning. Moreover, a child who has learning disabilities has a higher risk of developing obesity...

• What Could an Itchy Vulva Mean?

  The vulva is the external part of the female genitalia, which includes the skin between the anus and the vagina, and the lips of the vagina. An itchy vulva is medically called pruritus vulvae. It is normal for women to experience a slight vulvar itch, but if you have an uncomfortable and persistent...

• Why is Cord Blood Banking Important?

  Cord blood banking is the method of preserving cord blood, which is blood taken from the umbilical cord after the delivery. Cord blood contains hefty amounts of stem cells, which are potential life-saying cells for numerous diseases. Collecting cord blood is a painless procedure, and is considered...