Physical Wellness · ScienceDaily Stress · May 4, 2026

This simple blood test might detect depression before symptoms appear

A new study suggests depression may soon be detectable through a simple blood test—by tracking how certain immune cells age. Researchers found that accelerated aging in monocytes, a type of white blood cell, is closely tied to the emotional and cognitive symptoms of depression, like hopelessness and loss of pleasure, rather than physical symptoms such as fatigue.

Originally published by ScienceDaily Stress. We curate and add context; they did the reporting.

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