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

The thyroid is a butterfly-shaped gland crucial for hormone production affecting metabolism, heart rate, and more. Signs of thyroid issues include weight changes, irregular heartbeat, and temperature sensitivity. You can live without a thyroid with hormone therapy. Key hormones include T3, T4, RT3, and calcitonin. Iodine is essential but must be balanced. Thyroid disease affects 20M+ Americans—main types include hypothyroidism and hyperthyroidism. Women are especially at risk