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  1. Urine - Wikipedia

    Urine, excreted by the kidneys, is a liquid containing excess water and water-soluble nitrogen-rich by-products of metabolism including urea, uric acid, and creatinine, which must be cleared from the …

  2. Urine: Urination, Composition, Production, Color & Odor

    Jan 13, 2025 · Urine is liquid waste that your kidneys make to remove excess fluids and waste products from your body. It mostly consists of water, but it also contains waste products, salt and electrolytes.

  3. Urine color - Symptoms and causes - Mayo Clinic

    Oct 11, 2025 · Foods such as beets, blackberries and fava beans can turn urine pink or red, for example. And some medicines can give urine vivid tones, such as orange or greenish-blue.

  4. Urine Color and Odor: What It Reveals About Your Body - WebMD

    Feb 19, 2025 · But the basic details of your urine — color, smell, and how often you go — can give you a hint about what’s going on inside your body. Pee is your body’s liquid waste, mainly made of water, …

  5. Urine | Definition, Composition, & Facts | Britannica

    Dec 18, 2025 · Urine, liquid or semisolid solution of metabolic wastes and certain other, often toxic, substances that the excretory organs withdraw from the circulatory fluids and expel from the body. …

  6. Urine color chart: Healthy colors and when to seek help

    Apr 9, 2025 · Some urine color changes may be a sign of an infection or a problem with the liver or kidneys. This article looks at what different urine colors may mean and when to contact a doctor.

  7. The Urinary Tract & How It Works - NIDDK

    Describes how the urinary tract works, why it’s important, what affects the amount of urine produced, and how to keep the urinary tract healthy.

  8. Pee Science: What Your Urine Says About Your Health

    Jul 27, 2025 · Urine offers a direct window into the body’s internal workings. This readily available bodily fluid provides insights into hydration levels, dietary influences, and even potential health conditions.

  9. Anatomy of the Urinary System - Johns Hopkins Medicine

    The urinary system's function is to filter blood and create urine as a waste by-product. The organs of the urinary system include the kidneys, renal pelvis, ureters, bladder and urethra.

  10. Health Encyclopedia - University of Rochester Medical Center

    Urea is made when foods containing protein (such as meat, poultry, and certain vegetables) are broken down in the body. Urea is carried in the blood to the kidneys. This is where it is removed, along with …