Homeostasis is the ability or tendency of an organism or cell to maintain internal equilibrium by adjusting its physiological processes
Maintaining a constant internal environment with all that the cells need to survive (oxygen, glucose, mineral ions, waste removal, and so forth) is necessary for the well–being of individual cells and the well–being of the entire body.
The varied processes by which the body regulates its internal environment are collectively referred to as homeostasis. It is the ability or tendency of an organism or cell to maintain internal equilibrium by adjusting its physiological processes. Homeostatic mechanisms are dynamic and regulate many different parameters in the human body (e.g., pH, dissolved oxygen, glucose concentration).
Positive feedback is the body's mechanism to enhance a output needed to maintain homeostasis. Positive feedback mechanisms push levels out of normal ranges. An example of positive feedback is the release of oxytocin during child birth. Negative feedback mechanisms consist of reducing the output or activity of any organ or system back to its normal range of functioning. A good example of this is regulating blood pressure. Diseases that result from a homeostatic imbalance include diabetes, dehydration, hypoglycemia.