The pituitary gland is often called the body’s master gland because it makes and releases hormones that help control growth, metabolism, reproduction, stress response, breast milk production, and water balance.

What it does

It sits at the base of the brain and sends out hormones that tell other glands what to do, including the thyroid, adrenal glands, and reproductive organs.

Main jobs

  • Growth, through growth hormone.
  • Reproduction, through hormones like FSH and LH.
  • Stress response, through ACTH.
  • Breast milk production, through prolactin.
  • Water and sodium balance, through ADH/vasopressin.
  • Labor and bonding, through oxytocin release.

Simple picture

Think of it like a tiny control hub in the brain: it does not do everything itself, but it helps coordinate many of the body’s hormone-driven systems.

TL;DR

The pituitary gland helps regulate growth, hormones, reproduction, stress, milk production, and fluid balance, so it plays a major role in keeping the body’s internal systems working smoothly.