**Sleep apnea has been shown to increase risk and severity of heart disease, high blood pressure, heart attacks, cardiac arrhythmias, sexual dysfunction, diabetes, stroke, and other chronic health issues. You might also feel quick-tempered, moody or depressed. Children and adolescents with sleep apnea might perform poorly in school or have behavior problems. Sleep apnea results in preventing your body from reaching REM sleep which leads to daytime sleepiness, fatigue, short-term memory loss, early onset dementia and personality disturbances. These physical effects double the risk of car accidents.