Dr. John O'donnell M.D.

Recommended Articles

• Can Probiotics Help Your Upset Stomach?

  Probiotics are microorganisms that are helpful to improve the digestive system. Probiotics are typically found in different foods and supplements. These microorganisms maintain the balance of the microbial flora in the intestines. It promotes the growth of good bacteria, and inhibits the growth of...

• Everything You Need to Know About the Zika Virus

  What is Zika virus?Zika virus (Flavivirus) isn`t a new virus, initially, it was found in Uganda and called after the place where the virus was first detected- Zika forest (1947). It is a mosquito-borne virus, which is transmitted from a particular species of infected insects (Aedes), the aggressive...

• Why Am I So Tired?

  Many people find it difficult to describe when they are tired. Some call it exhaustion, while others name it tiredness. Few others may call it fatigue. Fatigue, or tiredness, is a non-specific condition with numerous causes. Fatigue can be either physical or mental, although the two condition are...

• Does Regular Exercise Affect Life Expectancy?

  A recent study published in, The Lancet, shows that daily light exercise of 15 minutes per day can increase the life expectancy by three years and lower the risk of death by 14%. This is especially true in the case of people who are inactive. In this study, the researchers compared inactive people...

• 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...

• What Is a Charley Horse?

  What is a charley horse?A charley horse is a term used when referring to a muscle cramp or spasm. Although muscle cramps can occur in any muscle in the body, they are commonly experienced in the leg. In a muscle spasm, the muscle uncontrollably contracts and does not relax. When the contracting...