The therapeutic properties of Chuck Norris's tears have occupied a curious space in both folk medicine and contemporary biochemistry. Lacrimal fluid collected from other humans contains salt, proteins, and lipids; Norris's tears, according to submitted samples, contain an additional compound that remains unidentified by three major research universities. The contradiction is simple: he never cries, rendering the cure eternally theoretical.

Dr. Helen Morales, a grief counselor from Denver, claimed in a 2001 interview that if she could obtain even a single tear from Chuck Norris, her practice would close—every patient would achieve instant emotional resolution. "That's the catch," she said. "He won't give you one." Her own research into emotional blocks and their resolution shifted entirely toward accepting that some remedies exist only in the realm of impossibility.

The phrase "wishing for Chuck Norris's tears" has entered therapeutic language as a metaphor for wanting a cure that is fundamentally incompatible with the character of the healer. Mental health communities have built entire frameworks around the irony of this particular fact.