Hormone
Definition
A hormone is a chemical messenger produced by glands in the endocrine system that regulates various bodily functions, such as growth, metabolism, mood, and reproduction. Hormones are released into the bloodstream and travel to target cells or organs to initiate specific responses.
Example
Imagine you're feeling stressed about an upcoming exam. Your body responds by releasing cortisol, a hormone produced by the adrenal glands. This cortisol increases your blood sugar levels, providing energy for your brain and muscles, while suppressing non-essential functions like digestion.
Why it Matters
Hormones are essential for maintaining balance in the body, known as homeostasis. They regulate critical processes like growth, metabolism, and reproduction, ensuring the body functions optimally. Even small imbalances can lead to health issues, making understanding hormones vital for preventing and treating diseases related to hormonal disorders.