Dr. Quan Quoc Nguyen M.D.

Recommended Articles

• What Is Nicotine?

  IntroductionNicotine is an alkaloid stimulant that comes from the nightshade family of plants, particularly from the leaves of tobacco. The type of nicotine found in tobacco plants is called Nicotiana tabacum. Nicotine can also be synthetically produced. Thousands of chemicals are contained in...

• What Is Oromandibular Dystonia?

  Oromandibular DystoniaOromandibular dystonia is a type of focal dystonia. This condition is also called cranial dystonia, in which the face, jaw, or tongue forcefully contracts and becomes difficult to open and close the mouth. Thus, a person's speech and ability to chew are affected. Cranial...

• Diagnosing Heart Palpitations

  What are heart palpitations?Heart palpitations are when you start feeling your own heart beating. You will feel as if your heart is beating too fast, slow, forcefully, or irregularly. You will feel as if you missed a beat. The frequency and severity of heart palpitations will vary from one person to...

• Are Energy Drinks Safe?

  Recently, there have been serious health issues linked to energy drink.  The ever growing popularity and consumption of these products came on quickly. Are these drinks safe like manufacturers claim them to be?Energy drinks are basically beverages that contain stimulants, like caffeine, and are...

• Is My Diarrhea Caused by Irritable Bowel Syndrome?

  What is irritable bowel syndrome (IBS)?Irritable bowel syndrome (IBS) is a common gut disorder. Irritable bowel syndrome (IBS) is unlike inflammatory bowel disease and differs from other bowel conditions. It is a group of several symptoms such as abdominal pain, bloating, cramping, constipation,...

• Do Irregular Periods Cause Infertility: How to Get Pregnant

  Any woman can feel a great deal of anxiety when experiencing irregular periods. However, several women have been affected by it and have become a common problem of women these days. If a woman misses her period, it can be a sign of pregnancy, but having irregular periods may also indicate some...