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  1. Hormones: What They Are, Function & Types - Cleveland Clinic

    Hormones are chemicals that coordinate different functions in your body by carrying messages through your blood to your organs, skin, muscles and other tissues.

  2. Hormone | Definition, Function, & Types | Britannica

    Oct 7, 2025 · A hormone is an organic substance secreted by plants and animals that functions in the regulation of physiological activities and in maintaining homeostasis. Hormones carry out their …

  3. What Is a Hormone? - National Institute of General Medical Sciences

    Jul 17, 2024 · Hormones are chemical messengers in the body that glands form and release, or secrete, into the bloodstream, where they travel to various organs and tissues to change biological functions. …

  4. Hormone - Wikipedia

    Hormones are required for the normal development of animals, plants and fungi. Due to the broad definition of a hormone (as a signaling molecule that exerts its effects far from its site of production), …

  5. What are hormones? Types, functions, and imbalances

    Jun 26, 2024 · Hormones are chemical messengers that send a signal to one or more tissues or organs in the body. They are part of the endocrine system, and the study of this system is known as …

  6. Hormones – Definition, Function, Sources, and Regulation

    Oct 21, 2025 · Hormones are chemical messengers that coordinate and regulate vital processes in animals and plants. Produced by specialized cells in endocrine glands or tissues, hormones are …

  7. Hormones | Endocrine Glands | MedlinePlus

    Jun 28, 2025 · Hormones are your body's chemical messengers. They affect many processes including mood. Too much or too little of a certain hormone can have health implications.

  8. What are Hormones? - News-Medical.net

    Mar 19, 2025 · Hormones are chemical messengers that are secreted directly into the blood, which carries them to organs and tissues of the body to exert their functions.

  9. What Are Hormones and Why Do They Matter? - Erdem Hospital

    May 16, 2025 · Hormones are chemical messengers produced by special glands in your body. They travel through the bloodstream to various tissues and organs, delivering signals that tell your body …

  10. What to know about hormones - UnitedHealthcare

    Hormones are chemicals made by glands in your endocrine system that travel through your bloodstream, delivering important instructions to your organs and tissues.