Dr. J Michael Heffernan MD

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• Zika Virus Symptoms: What Is Zika Virus and Travel Recommendations

  In 1947, the Zika virus was discovered and got its name from Uganda’s Zika Forest. The first human case of Zika was identified in 1952. Since then, outbreaks of the virus were reported in the Southeast Asia, the Pacific Islands, and Africa, although it was possible for Zika outbreaks to happen in...

• The Human Heart: Function, Chambers, and Location

  IntroductionThe human heart is a part of the cardiovascular system that is situated in the middle of the chest between the lungs. Its exact location is slightly positioned to the left and behind the sternum (breastbone). The size of the heart is approximately the size of your fist. Its function...

• Exercise Can Benefit a Child's Academic Abilities

  A new review of studies shows that physical activity and exercise may help children to perform better in academics. According to the researchers physical activity improves the functioning of the brain and enhances thinking skills by increasing blood flow and oxygen to the brain cells. Exercise also...

• 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...

• How Long Can Sperm Live?

  Introduction An average man ejaculates 1/2 teaspoon to 1 teaspoon of semen. This small amount of semen contains millions of sperm cells. It only takes one sperm to fertilize an egg, but each sperm has a limited life span, which begins once it leaves a man's body.For a couple trying to have a baby,...

• What Are Antihypertensive Drugs?

  IntroductionMedications that help treat hypertension are called antihypertensive drugs, which are divided into different categories. These medications work differently with different side effects. Because there are many antihypertensive drugs available, finding the best medication and treatment plan...