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  1. 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 …

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

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

  3. Hormones and the Endocrine System - Johns Hopkins Medicine

    The endocrine system uses hormones to control and coordinate your body's internal metabolism (or homeostasis) energy level, reproduction, growth and development, and response to injury, …

  4. 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 …

  5. 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 …

  6. 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 …

  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. You and Your Hormones

    Our video collection providing practical information on hormones and endocrine conditions, created in collaboration with expert endocrinologists. "They can rule our lives and shape our …

  9. 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.

  10. The new science of hormones: Everything you need to know, …

    Jun 24, 2023 · Hormones are chemical messengers that travel throughout the body, telling our cells and organs what to do. They regulate nearly all bodily processes and affect every aspect …