Nutritional supplements
Learning Center
Too much vitamin C: Is it harmful?
Vitamin C is an essential nutrient, but too much carries its own risks.
Tonsillitis
Learn about the causes and treatment of tonsillitis, a common cause of sore throat in children.
Tonsillectomy
Learn how to prepare for a tonsillectomy and what to expect from the surgery.
Thyroid peroxidase antibody test: What is it?
A thyroid peroxidase antibody test can help determine the cause of thyroid disease.
Thrombocytopenia (low platelet count)
Thrombocytopenia — Comprehensive overview covers symptoms, causes, treatment of a low platelet count.
Thermometers: Understand the options
Thermometers come in a variety of styles. Find out the pros and cons of different types of thermometers.
Thalassemia
Some forms of this inherited blood disorder usually show up before the age of 2, often causing anemia. More severe forms of the disease require regular blood transfusions.
Tetralogy of Fallot
These four heart problems present at birth change how blood flows through the body. Know the symptoms and treatment.
Testicular exam
Examining your testicles regularly can help you notice changes when they occur and identify testicular problems.
Test anxiety: Can it be treated?
Feelings of worry and self-doubt can interfere with how well you do on tests. Here's what you can do to lower your anxiety.
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