What is Nutrition? nutritionists use ideas from molecular biology, biochemistry, and genetics to understand how nutrients affect the human body. Nutrition also focuses on how people can use dietary choices to reduce the risk of disease, what happens if a person has too much or too little of a nutrient,...

Hepatitis Hepatitis is an inflammation of the liver. Alcohol consumption, several health conditions, and some medications can all cause this condition. However, viral infections are the most common cause of hepatitis. Safe and effective vaccines are available to prevent hepatitis B virus (HBV). This vaccine also prevents the development of...

Blood Donation Blood donation is a vital part of worldwide healthcare. It relates to blood transfusion as a life-sustaining and life-saving procedure as well as a form of therapeutic phlebotomy as a primary medical intervention. Over one hundred million units of blood are donated each year throughout the world. This article will...

Knee Replacement Knee replacement surgery — also known as knee arthroplasty (ARTH-row-plas-tee) — can help relieve pain and restore function in severely diseased knee joints. The procedure involves cutting away damaged bone and cartilage from your thighbone, shinbone and kneecap and replacing it with an artificial joint (prosthesis) made of...

Knee Arthroscopy Knee arthroscopy is a surgical procedure that allows doctors to view the knee joint without making a large incision (cut) through the skin and other soft tissues. Arthroscopy is used to diagnose and treat a wide range of knee problems. During knee arthroscopy, your surgeon inserts a small...

What is an ICU? ICU cares for people who have life-threatening conditions, such as a serious injury or illness, where they receive around-the-clock monitoring and life support. It differs from other hospital wards in that: ICU provides 24-hour care from a highly-trained team of specialists there are fewer beds, with...

Glaucoma Glaucoma is a group of eye conditions that damage the optic nerve. The optic nerve sends visual information from your eye to your brain and is vital for good vision. Damage to the optic nerve is often related to high pressure in your eye. But glaucoma can happen even...

Retinal Detachment Surgery Retinal detachment describes an emergency situation in which a thin layer of tissue (the retina) at the back of the eye pulls away from its normal position. Retinal detachment separates the retinal cells from the layer of blood vessels that provides oxygen and nourishment to the eye....

Hemodialysis In haemodialysis, a machine filters wastes, salts and fluid from your blood when your kidneys are no longer healthy enough to do this work adequately. Hemodialysis (he-moe-die-AL-uh-sis) is one way to treat advanced kidney failure and can help you carry on an active life despite failing kidneys. With haemodialysis,...

Diagnostic Radiology Radiology, also known as diagnostic imaging, is a series of tests that take pictures or images of parts of the body. The field encompasses two areas — diagnostic radiology and interventional radiology — that both use radiant energy to diagnose and treat diseases. While there are several different imaging...

Appendectomy Appendicitis is an inflammation of the appendix, a finger-shaped pouch that projects from your colon on the lower right side of your abdomen. Appendicitis causes pain in your lower right abdomen. However, in most people, pain begins around the navel and then moves. As inflammation worsens, appendicitis pain typically...

Kirschner wires (K-wires) Kirschner wires (K-wires) are stiff, straight wires that are sometimes needed to repair a fracture (broken bone). K-wires are also commonly called ‘pins’. If your child has a fracture that requires surgery, they may need K-wires to help hold the bones in place until they heal. They...

Circumcision Circumcision is the surgical removal of the skin covering the tip of the penis. The procedure is fairly common for newborn boys in certain parts of the world, including the United States. Circumcision after the newborn period is possible, but it's a more complex procedure. For some families, circumcision...

LASIK Eye Surgery LASIK eye surgery is the best known and most commonly performed laser refractive surgery to correct vision problems. Laser-assisted in situ keratomileusis (LASIK) can be an alternative to glasses or contact lenses. During LASIK surgery, a special type of cutting laser is used to precisely change the shape of...

Prostatectomy Surgery Prostatectomy is surgery to remove part or all of the prostate gland. The prostate gland is situated in the male pelvis, below the urinary bladder. It surrounds the urethra, which carries urine from the bladder to the penis. The procedure is used to treat a number of conditions...

Cataract Surgery Cataract surgery is a procedure to remove the lens of your eye and, in most cases, replace it with an artificial lens. Normally, the lens of your eye is clear. A cataract causes the lens to become cloudy, which eventually affects your vision. Cataract surgery is performed by...

What are kidney stones? Kidney stones are hard, pebble-like pieces of material that form in one or both of your kidneys when high levels of certain minerals are in your urine. Kidney stones rarely cause permanent damage if treated by a health care professional. Kidney stones vary in size and...

What is colonoscopy? Colonoscopy is a procedure in which a doctor uses a colonoscope or scope, to look inside your rectum and colon. Colonoscopy can show irritated and swollen tissue, ulcers, polyps, and cancer How is virtual colonoscopy different from colonoscopy? Virtual colonoscopy and colonoscopy are different in several ways:...

What is urodynamic testing? Urodynamic testing is any procedure that looks at how well parts of the lower urinary tract—the bladder, sphincters, and urethra—work to store and release urine. Most urodynamic tests focus on how well your bladder can hold and empty urine. Urodynamic tests can also show whether your...

ERCP Surgery Endoscopic retrograde cholangiopancreatography, or ERCP, is a procedure to diagnose and treat problems in the liver, gallbladder, bile ducts, and pancreas. It combines X-ray and the use of an endoscope—a long, flexible, lighted tube. Your healthcare provider guides the scope through your mouth and throat, then down the...