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

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   2024年5月17日 · Also known as impotence, erectile dysfunction (ED) is the inability to have or maintain an erection adequate for sex. If you have a penis, you are bound to experience ED at one time or another ...

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

   www.webmd.com › sex-relationships › masturbation-guide

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   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...

3. www.webmd.com › fitness-exercise › remedies-for-muscle-cramps7 Remedies for Muscle Cramps: What to Do and When to See a ...

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   2024年1月15日 · Causes of Muscle Cramps. How to Stop Muscle Cramps. When to See a Doctor. 5 min read. What Are Muscle Cramps? Muscle cramps are a common issue that many people get from time to time. If one of your...

4. www.webmd.com › osteoarthritis › hip-osteoarthritisHip Osteoarthritis: Symptoms, Treatments, Exercise, Causes - ...

   www.webmd.com › osteoarthritis › hip-osteoarthritis

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   2024年6月2日 · Osteoarthritis occurs when inflammation and injury to a joint cause a breaking down of cartilage tissue. In turn, that breakdown causes pain, swelling, and deformity. Cartilage is a firm, rubbery...

5. www.webmd.com › vitamins-and-supplements › ssVitamins and Minerals From A to Z - WebMD

   www.webmd.com › vitamins-and-supplements › ss

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   2022年8月23日 · One type comes from animal sources of food. It helps you see at night, make red blood cells, and fight off infections. The other type is in plant foods. It helps prevent damage to cells and an eye...

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6. www.webmd.com › hepatitis › jaundice-why-happens-adultsJaundice: Causes, Symptoms, and Treatment Options - WebMD

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   2023年11月7日 · What Is Jaundice? When red blood cells die, they leave behind bilirubin, a yellow-orange pigment in the blood. The liver filters bilirubin from the bloodstream to be removed in your stool. If too...

7. www.webmd.com › pain-management › unexplained-nerve-pain-theUnexplained Nerve Pain Causes, Symptoms, Treatments - WebMD

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   2024年3月13日 · Symptoms of Unexplained Nerve Pain. Idiopathic peripheral neuropathy, like diabetic neuropathy, usually causes numbness in the hands and feet. The numbness may go unnoticed if it causes no pain...