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  1. Osteopathic medicine: What kind of doctor is a D.O.? - Mayo Clinic

    Dec 12, 2025 · You know what M.D. means, but what does D.O. mean? What's different and what's alike between these two kinds of health care providers?

  2. Probiotics and prebiotics: What you should know - Mayo Clinic

    Apr 25, 2025 · Probiotics and prebiotics are two parts of food that may support gut health. Probiotics are specific living microorganisms, most often bacteria or yeast that help the body …

  3. Pneumonia - Symptoms and causes - Mayo Clinic

    Jun 13, 2020 · Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, …

  4. Fatty liver disease (MASLD) - Symptoms and causes - Mayo Clinic

    Dec 12, 2025 · Compared with a healthy liver (top), a fatty liver (bottom) appears bigger and discolored. Tissue samples show extra fat in fatty liver disease, while inflammation and …

  5. Swollen lymph nodes - Symptoms & causes - Mayo Clinic

    Apr 25, 2025 · Swollen lymph nodes most often happen because of infection from bacteria or viruses. Rarely, cancer causes swollen lymph nodes. The lymph nodes, also called lymph …

  6. Get the facts about COVID-19 vaccines - Mayo Clinic

    Oct 24, 2025 · Find out about the COVID-19 vaccines, the benefits of a COVID-19 vaccination, the possible side effects and how to prevent infection.

  7. Stem cells: What they are and what they do - Mayo Clinic

    Mar 23, 2024 · Get answers about where stem cells come from, why they're important for understanding and treating disease, and how they are used.

  8. Exercise: 7 benefits of regular physical activity - Mayo Clinic

    Aug 26, 2023 · Do you feel too tired or too out of shape to enjoy physical intimacy? Regular physical activity can improve energy levels and give you more confidence about your physical …

  9. Detox foot pads: Do they really work? - Mayo Clinic

    Aug 15, 2024 · Do detox foot pads really work? No trustworthy scientific evidence shows that detox foot pads work. Most often, these products are stuck on the bottom of the feet and left …

  10. Vitamin B-12 - Mayo Clinic

    Aug 13, 2025 · Know the causes of a vitamin B-12 deficiency and when use of this supplement is recommended.