What is identified as the single most common factor in suicide?

Depression is recognized as the single most common factor in suicide due to its profound impact on an individual's mental health and overall well-being. It can lead to feelings of hopelessness, despair, and debilitating emotional pain, which might make an individual feel that suicide is the only escape from their suffering. Moreover, depression frequently co-occurs with other risk factors such as substance abuse and isolation, further exacerbating suicidal thoughts and tendencies. Understanding depression's role helps in identifying those at risk and facilitating appropriate interventions and support systems, which are crucial in suicide prevention efforts.