Dr. Patricia Susan Grayson M.D.

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• HIV: 5 Transmission Myths

  What is HIV?HIV is a virus that was discovered in the 1980s. It attacks a person's immune system, causing it to be too weak to fight outside infections. The HIV virus works by destroying white blood cells, called CD4 cells, in the immune system, and progresses through three stages, the last of which...

• Viral vs. Bacterial Infections: Know the Difference

  IntroductionBoth bacterial and viral infections are caused by microbes, such as bacteria and viruses. These microbes are spread through the following:...

• Why Are Chia Seeds Beneficial to our Health?

  These seeds were an integral part of Mayan and Aztec diets for years and were used as energy boosters in these early cultures. As many studies show, these seeds are good nutritional addition to foods. Chia seeds come in two colors: dark brown or black. The attractive quality of this food is that it...

• Health Reasons That Can Make a Person Pass Out

  Causes of Fainting A person faints or loses consciousness for a brief time when the brain does not get enough oxygen. Fainting or passing out is also medically called syncope. Before fainting, people may experience lightheadedness, dizziness, weakness, and nausea. Others describe fainting as...

• What Could Happen if My Pneumonia Remains Untreated?

  There are several types of pneumonia that vary in their degree of seriousness. Pneumonia caused by a viral infection can make people feel very sick with fever, cough, and tiredness. However, viral pneumonia tends to go away on its own after some time. A "walking pneumonia" is a mild case of...

• Smile to Look Younger!

  Want a youthful appearance? Then just smile, or so says a new study. In one recent study, people guessed that people who were smiling in photos were younger than those who had neutral or angry expressions. This is another study which adds to the evidence that facial expression has an impact on the...