By Emma Spencer, Science & Technology Reporter

Amid growing scrutiny of psychiatric diagnoses and the widespread use of antidepressants, a new study from researchers in Gdansk, Poland highlights a problem critics have pointed out for years: different groups can be diagnosed with depression and other mental illnesses at vastly different rates.

The explanation has nothing to do with the cliché that “ignorance is bliss.” It points instead to a deeper issue in how depression is defined.

Psychiatric diagnoses are not based on objective medical testing. There is no blood test, scan, or measurable biological marker that confirms someone has depression. Instead, diagnoses rely on subjective questionnaires and conversations, where individuals are asked to describe their internal state using broad and often ambiguous language.

That creates a built-in flaw.

According to the study, more intelligent individuals tend to describe their thoughts and emotions with greater precision. In doing so, they are more likely to use language that aligns with clinical definitions of depression, even when they are experiencing the same underlying feelings as someone who would never receive that label.

Two people can feel the same way, but the one who articulates it more clearly is more likely to be diagnosed.

This finding reinforces a long-standing criticism of psychiatry: when diagnoses depend heavily on interpretation rather than objective evidence, they become difficult to standardize and easy to overextend.

The Gdansk study adds to a broader conversation that gained momentum in 2022, when a British Medical Journal analysis challenged the widely promoted “chemical imbalance” theory of depression, raising further questions about how these conditions are defined.

At the same time, institutions such as the National Institutes of Health have begun offering resources for individuals seeking to discontinue antidepressants, reflecting a shift in how these medications are being approached.

Taken together, these developments point to a practical concern.

If individuals are being labeled as depressed based largely on how they describe their emotions, then those labels may not always reflect a distinct medical condition so much as a difference in communication style.