The endocrine system is a network of glands that release hormones into the bloodstream to regulate growth, metabolism, stress, mood, and reproduction. It works more slowly than the nervous system but has longer-lasting effects. Key glands include the pituitary, thyroid, adrenal glands, and pancreas. A healthy lifestyle—including good nutrition, sleep, and stress management—supports hormone balance and overall well-being. Hormonal regulation is whole-body effort, not limited t