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  1. Menstrual cycle: What's normal, what's not - Mayo Clinic

    Apr 22, 2023 · Learn about how to track your menstrual cycles and what any changes may mean.

  2. Heart rate: What's normal? - Mayo Clinic

    Oct 8, 2022 · A normal resting heart rate for adults ranges from 60 to 100 beats per minute. A heart rate above or below that may signal a problem.

  3. Hyponatremia - Symptoms and causes - Mayo Clinic

    May 17, 2022 · Hyponatremia is the term used when your blood sodium is too low. Learn about symptoms, causes and treatment of this potentially dangerous condition.

  4. How many hours of sleep are enough? - Mayo Clinic

    Feb 1, 2025 · The amount of sleep you need depends on various factors — especially your age. While sleep needs vary significantly among individuals, consider these general guidelines for …

  5. Enlarged liver - Symptoms & causes - Mayo Clinic

    Mar 5, 2022 · An enlarged liver is one that's bigger than normal. The medical term is hepatomegaly (hep-uh-toe-MEG-uh-le). Rather than a disease, an enlarged liver is a sign of …

  6. Tachycardia - Symptoms and causes - Mayo Clinic

    Dec 15, 2023 · Learn more about the symptoms and treatment of this heart rhythm disorder, which causes a rapid heart rate.

  7. Stool color: When to worry - Mayo Clinic

    Oct 10, 2024 · Stool comes in a range of colors. All shades of brown and even green are considered typical. Only rarely does stool color indicate a possibly serious intestinal condition. …

  8. Ejection fraction: An important heart test - Mayo Clinic

    Jan 29, 2025 · Ejection fraction is a measurement of the percentage of blood leaving the heart each time it squeezes. When the heart squeezes, it's called a contraction. Ejection fraction is …

  9. Prothrombin time test - Mayo Clinic

    Dec 3, 2024 · Overview The prothrombin time test, sometimes referred to as the PT or pro time test, checks how quickly blood is clotting. Prothrombin is a protein produced by the liver. It is …

  10. Blood pressure chart: What your reading means - Mayo Clinic

    Feb 28, 2024 · Ideal blood pressure is categorized as normal. Increased blood pressure may be categorized as elevated, stage 1 or stage 2 depending on the specific numbers. A diagnosis of …

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