Depression affects one in 10 adults in the United States and about 35 million people worldwide, according the World Health Organization.  

It is a serious medical condition that can be disabling to sufferers because it affects mood and can cause changes in physical and cognitive health.  These changes in mood, physical health and mental health can prevent a person from functioning normally.  In severe cases, depression can lead to suicide, emphasizing the importance of trying to mitigate the symptoms of this illness.