Homeostasis means the process of keeping a stable, balanced internal environment inside a living organism, even when the outside world changes.

Simple meaning

  • In everyday terms, homeostasis is the body’s way of staying balanced on the inside.
  • Things like temperature, blood sugar, and water levels are kept within a safe range so cells can work properly.

In biology

  • In biology, homeostasis is the steady internal physical and chemical conditions that living systems maintain for survival.
  • If homeostasis works well, the organism stays healthy; if it fails badly, it can lead to serious illness or death.

Easy examples

  • Human body temperature is kept around 37 °C by sweating when too hot and shivering when too cold.
  • Blood sugar is controlled by hormones like insulin so that cells always have enough energy without levels going too high.

Beyond the body

  • The idea of homeostasis can also be applied to ecosystems, where living and nonliving parts interact to keep conditions relatively stable over time.
  • In psychology, the term can describe how mind and body seek a balanced state in needs, emotions, and motivation.

In short, homeostasis = staying stable on the inside while the outside keeps changing.