Can depression affect physical health and longevity, and can treatment help?
Depression is associated with higher health risks in some studies, but population averages cannot predict years lost by an individual. Depression is treatable. Coordinated mental and physical health care, support and follow-up can improve life and address modifiable risks.
Details
Why health may be affected
Appetite, sleep, activity and the ability to manage chronic illness can change. Depression may coexist with physical disease or substance use, and some people face self-harm risk. These are multifactorial relationships, not a fixed prediction of the future.
Steps that matter
Seek assessment for persistent low mood, loss of pleasure or impaired functioning. Discuss psychotherapy, suitable medicines and care for existing conditions such as hypertension or diabetes. Set manageable sleep, nutrition and activity goals with support rather than self-blame.
If you are unsafe now
With intent or a plan to harm yourself, contact local emergency services or go to the nearest emergency department. Involve someone trusted and avoid being alone if possible. Do not wait for a new medicine or routine appointment.
Related reading: What are the signs of occupational burnout versus depression?.