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  1. 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. …

  2. 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 …

  3. 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.

  4. Cholesterol ratio or non-HDL cholesterol: Which is most important?

    Jan 12, 2024 · For predicting your risk of heart disease, many healthcare professionals now believe that determining your non-HDL cholesterol level may be more useful than calculating …

  5. C-reactive protein test - Mayo Clinic

    Jan 23, 2025 · C-reactive protein, also called CRP, is a protein made by the liver. The level of CRP increases when there's inflammation in the body. A simple blood test can check your C …

  6. Aging: What to expect - Mayo Clinic

    Nov 1, 2024 · Aging: What to expect Wonder what's considered a natural part of the aging process? Here's what to expect as you get older — and what you can do about it. By Mayo …

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

    Dec 24, 2025 · 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 …

  8. Hyponatremia - Symptoms and causes - Mayo Clinic

    Jul 18, 2025 · Hyponatremia is the term used when your blood sodium is too low. Learn about symptoms, causes and treatment of this potentially dangerous condition.

  9. High cholesterol - Symptoms and causes - Mayo Clinic

    Mar 7, 2025 · High cholesterol can be inherited. That means it can pass from parents to children through genes. But high cholesterol often is the result of lifestyle choices such as not getting …

  10. High blood pressure (hypertension) - Mayo Clinic

    Feb 29, 2024 · Hypertension can be diagnosed by performing careful and repeated measures of the blood pressure. Blood pressure categories include normal blood pressure, defined as a …