Why does sleep deprivation cause mental health issues?

It has always been thought that lack of mental health cause sleep disorders. But new researches have been reporting mental issues caused by sleep disorders. According to the Center for Disease Control and Prevention (CDC), one-third of adults in the U.S. complain of sleep deprivation. It’s been estimated that 33% percent of people worldwide suffer from insomnia. So it’s vital to consider any effect it has on mental health.
Sleep deprivation may lead to physical conditions like heart disease or type 2 diabetes; it can cause or worsen mental conditions. Its effects may be stress, depression, and anxiety. Being deprived of sleep makes people irritable and easily aroused, making them less tolerant and vulnerable to even simple stressors in everyday life.
Considering the literature on the effects of sleep deprivation on mental health, we can’t say with confidence that insomnia heightens the chances of getting mentally ill. But being precautious may be wise if insomnia is your case.