Bipolar disorder has a strong biological foundation. Research summarized by the Depression and Bipolar Support Alliance shows that the condition arises from a combination of genetic vulnerability, neurotransmitter dysregulation (particularly dopamine, serotonin and norepinephrine) and environmental triggers.
Mood episodes are often triggered or worsened by sleep deprivation, major life stressors, substance use, hormonal shifts or inconsistent medication adherence. A first manic or depressive episode commonly emerges in the late teens to mid-twenties, but bipolar disorder can develop at any age. Untreated, the condition tends to be cyclical and progressive, which is why early diagnosis through a thorough psychiatric evaluation is critical.
