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Health Library

  • Have a Hearty Workout for Your Heart

    Read on for helpful tips about heart-smart exercise.

  • Have Diabetes? Watch for These Lesser-Known Complications

    You have regular eye exams. You get a foot checkup at every health care provider visit. But if you have diabetes, there are other health concerns you may face.

  • Have You Been Screened for Cervical Cancer?

    Although cancer of the cervix was once one of the most common causes of cancer-related death among U.S. women, effective testing has dramatically changed that.

  • Hawthorn

    Learn the medical uses, claims, and side effects of hawthorn.

  • Hazardous Materials in the Home Quiz

    Bleach, ant killer, and gasoline are poisons commonly found in the home. But plenty of other toxic or hazardous chemicals fill our shelves and cupboards, and some of them may surprise you. Hairspray, for instance, is highly flammable. Learn more about these chemicals by taking this quiz.

  • Hazardous Substances Demand Your Respect

    Depending on where you work and the substances you handle, you may be at risk of accidental poisonings, chemical burns, or suffocation. Read on to learn about the safety steps that can help keep you safe.

  • HCG (Blood)

    This test is the gold standard for determining whether you are pregnant. It shows that you are pregnant before an imaging test, such as an ultrasound, can do so.

  • HCG (Urine)

    This test measures the amount of human chorionic gonadotropin (HCG) in your urine. It can tell whether you are pregnant within days of a missed period.

  • HDL Cholesterol

    This test measures the amount of HDL ("good") cholesterol in your blood. It's one of several tests that can determine your risk for heart disease.

  • Head and Neck Cancer: Overview

    Head and neck cancer is the term given to cancers that start in the head and neck region. Learn more about symptoms, diagnosis, and treatments.