Use the A-Z list to browse more than 6,000 health-related topics in our library. Clicking on a term opens the definition and, in most cases, links to more information.
A measurement of bone mineral density that compares one individual's bones to other adults of the same age and gender. More Information on Z Score: Bone Health
"Zafirlukast" is more commonly referred to as "Leukotriene Modifiers" in the medical community. Leukotriene Modifiers
Also Known As: "Montelukast, Leukotriene Receptor Antagonists, Leukotriene Antagonist, Zileuton"
A new class of drugs for the treatment of asthma. Leukotrienes are chemical compounds released in the body during an inflammatory process, which cause the airways to narrow. The drug blocks the production or the action of leukotrienes. More Information on Leukotriene Modifiers: Allergy & Asthma Drugs
A yellow carotenoid that is the main pigment in yellow Indian corn. It may help prevent macular degeneration. More Information on Zeaxanthin: Herbs & Supplements
A congenital disorder marked by abnormal peroxisomes in the cells of the liver, kidneys and brain. It is among a group of genetic disorders called peroxisomal diseases that affect brain development and growth of the myelin sheath. More Information on Zellweger Syndrome: Birth & Genetic Disorders
A disorder that causes increased levels of the hormone gastrin resulting in excess production of the hydrochloric acid in the stomach. It is often caused by a tumor in the pancreas. More Information on ZES: Gastritis & Ulcer
A brand of ACE inhibitors, medications that widen blood vessels and lower blood pressure by blocking the production of angiotensin II. ACE stands for angiotensin-converting enzyme. More Information on Zestril: Heart Drug & Medication
A type of assisted reproductive technology in which a woman's eggs are removed and combined with sperm outside the body to achieve fertilization. The resulting zygote is the implanted into the fallopian tube one day later. More Information on ZIFT: Fertility Issues
"Zileuton" is more commonly referred to as "Leukotriene Modifiers" in the medical community. Leukotriene Modifiers
Also Known As: "Montelukast, Leukotriene Receptor Antagonists, Leukotriene Antagonist, Zafirlukast"
A new class of drugs for the treatment of asthma. Leukotrienes are chemical compounds released in the body during an inflammatory process, which cause the airways to narrow. The drug blocks the production or the action of leukotrienes. More Information on Leukotriene Modifiers: Allergy & Asthma Drugs
A mineral important to the activity of enzymes that contribute to cell division and repair. It also helps the immune system function. Food sources include oysters, lamb, nuts, seeds, whole wheat, oats, peas and fish. More Information on Zinc: Minerals
Low levels of zinc in the body. It may result from inadequate dietary intake or from diseases such as liver disease and cystic fibrosis. Symptoms include enlargement of the liver and spleen, sparse hair growth and soft and misshapen nails. More Information on Zinc Deficiency: Minerals
"Ziprasidone" is more commonly referred to as "Clozapine" in the medical community. Clozapine
Also Known As: "Aripiprazole, Olanzapine, Risperidone, Quetiapine, Sertindole"
A type of medication belonging to the drug class called atypical antipsychotics. It may be used in the treatment of schizophrenia and acute manic and mixed episodes associated with bipolar disorder More Information on Clozapine: Psychiatric Medications
"Zit" is more commonly referred to as "Pimple" in the medical community. Pimple
Small infected elevation of the skin that is a common symptom in acne. It is caused by inflamed and/or obstructed pores that occur when the walls of the pore are broken, allowing sebum, bacteria, and dead skin cells to get under the skin. More Information on Pimple: Acne & Blemish
A brand of antibiotics, medications that kill or slow the growth of harmful microorganisms, such as bacteria. They have no effect on viruses. They are used to treat some heart infections and to prevent infections in high-risk patients. More Information on Zithromax: Heart Drug & Medication
A brand name medication (generic simvastatin) belonging to a class of drugs called statins -- cholesterol-reducing medications used in the treatment of high cholesterol. More Information on Zocor: Heart Drug & Medication
A disorder that causes increased levels of the hormone gastrin resulting in excess production of the hydrochloric acid in the stomach. It is often caused by a tumor in the pancreas. More Information on Zollinger Ellison Syndrome: Gastritis & Ulcer
"Zone Therapy" is more commonly referred to as "Acupressure" in the medical community. Acupressure
Also Known As: "Reflexology, Shiatsu, Tuina"
A traditional Chinese procedure similar to acupuncture that uses pressure instead of needles. Pressure is applied to specific points in the body with the hand, elbow or with devices. More Information on Acupressure: Alternative Medicine Center
"Zoonotic Roundworm" is more commonly referred to as "Roundworm" in the medical community. Roundworm
Also Known As: "Intestinal Roundworm, Roundworm Infection, Parasitic Roundworm"
Infection with any of a group of invertebrates with long, round bodies. Examples include enterobiasis, ascariasis, ancylostomiasis, trichuriasis, strongyloidiasis, toxocariasis and trichinosis. More Information on Roundworm: Infectious Disease Basics
A type of paraphilia in which sexual arousal is associated with non-human animals, sometimes leading to sexual intercourse. Sexual activity with animals is also referred to as bestiality. More Information on Zoophilia: Impulse Control Disorders
The stage of human development immediately after fertilization and before cell division begins. When fertilized by sperm, an egg becomes a zygote which develops into an embryo and then a fetus. More Information on Zygote: Growth & Development
A type of assisted reproductive technology in which a woman's eggs are removed and combined with sperm outside the body to achieve fertilization. The resulting zygote is the implanted into the fallopian tube one day later. More Information on Zygote Intrafallopian Transfer: Fertility Issues
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