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  1. www.webmd.com › defaultWebMD - Better information. Better health.

    WebMD provides reliable health and medical information, expert commentary, and educational services for better health.

  2. www.webmd.com › a-to-z-guides › understanding-anemia-basicsAnemia: Causes, Symptoms, Diagnosis, Treatments - WebMD

    2023年8月3日 · 10 min read. What Is Anemia? Anemia is defined as a low number of red blood cells. In a routine blood test, anemia is reported as a low hemoglobin or hematocrit. Hemoglobin is the main...

  3. www.webmd.com › erectile-dysfunction › how-an-erection-occursPenis: Anatomy, Picture, Erection, and Ejaculation - WebMD

    2024年5月17日 · What Is an Erection? An erection occurs when your penis fills with blood, causing it to expand and become firm. You might have an erection if you feel sexually aroused, though sometimes they just...

  4. www.webmd.com › drugsWebMD's A to Z Drug Database

    WebMD's A to Z Drug Database provides information on prescription drugs, vitamins, and over-the-counter medications, including side effects and interactions.

  5. www.webmd.com › a-to-z-guides › partial-thromboplastin-timeActivated Partial Thromboplastin Time (APTT) Test & APTT ...

    2023年5月22日 · What Is a Partial Thromboplastin Time Test? Medically Reviewed by Carol DerSarkissian, MD on May 22, 2023. Written by WebMD Editorial Contributors. What Does a PTT Test Look For? Why Would I Need...

  6. www.webmd.com › sex-relationships › what-to-know-how-oftenHow Often Do Married Couples Have Sex? - WebMD

    2023年7月11日 · Health & Sex Guide. How Often Do Married Couples Have Sex? Medically Reviewed by Sanjay Ponkshe on July 11, 2023. Written by WebMD Editorial Contributors. Average Number of Times Couples Have Sex...

  7. www.webmd.com › sex-relationships › masturbation-guideMasturbation - Is Masturbation Normal or Harmful? Who ...

    2022年12月16日 · Masturbation is the self-stimulation of the genitals to achieve sexual arousal and pleasure, usually to the point of orgasm (sexual climax). It is commonly done by touching, stroking, or...