Cardiovascular health: Serious sleep disorders, such as sleep apnea, have been linked to hypertension, increased stress hormone levels and irregular heartbeat. Learn more about sleep apnea signs and symptoms.
Mood: Insufficient sleep can make people more agitated or moody the following day. Chronic sleep deprivation can contribute to long-term mood disorders, such as depression or anxiety.
Immunity: During sleep, the immune system releases proteins called cytokines. These proteins deal with stress, fight infections and decrease inflammation in the body. Without enough sleep, these protective proteins and other important infection-fighting cells are reduced. Your body needs adequate sleep to fight infections and inflammation.
Alertness: Lack of sleep can take a toll on perception and judgment. In the workplace, its effects can be seen in reduced efficiency and productivity, errors and accidents. It also can be deadly, such as drowsy driving fatalities.