Dr. Christopher Ryan Chen

HIV, which stands for human immunodeficiency virus, is an infection that attacks the human being's defense system. When the infection gets into the body, it slowly destroys the immune system, leaving the body weak to various infections. As the virus continues to stay in the body, it develops from...

What is laryngitis?Laryngitis is the swelling of your voice box. It is often caused by an infection, mostly by a virus. The voice box is also known as the larynx. It links the back of your throat to the windpipe. The vocal cord and larynx are part and parcel and are required for speech. Laryngitis...

What is atherosclerosis?Atherosclerosis is also known as arteriosclerotic vascular disease or ASVD. It is a particular type of arteriosclerosis in which an artery wall gets thickened as an effect of attack and accumulation of white blood cells and rupture of the intimal smooth muscle cell producing...

What is a vaccine?Vaccines are products that enable a person to develop immunity against certain diseases. A vaccine can be given through needle injections, by aerosol, or by mouth. The polio vaccine is given in the form of mouth drops that contain live but weakened organisms. The vaccine gets into...

What is biotin?Biotin is a water-soluble vitamin also known as vitamin B7. This vitamin is critical for an organism's growth and development. It also serves as a coenzyme of carboxylase enzymes and is involved in the metabolism of carbohydrates, fatty acids, and amino acids. Biotin is required to...

Many of us who sit for a long time in front of a computer, in a car while traveling to the workplace, relax in front of the television, or do online shopping, might be have sitting disease. Sitting disease is another name for a sedentary lifestyle, which increases the risk for a number of diseases.A...