The Third Factor: What the Cell Danger Response (CDR) Could Mean for Autism

What families should know about the body’s “stuck” stress response and its potential role in autism

In Friday’s piece, we explored how autism may not be explained by genetics alone. Increasingly, researchers are pointing to a more complex picture—one that includes genetic sensitivity, environmental exposures, and a third factor that operates at the most fundamental level of the body: cellular response. This mechanism is known as the Cell Danger Response (CDR), and it is becoming a central focus in how some scientists understand autism.

At its core, the Cell Danger Response is not a disorder—it’s a survival system. When the body encounters a threat, whether from infection, toxins, or stress, cells shift into a protective mode. They conserve energy, limit communication, and prioritize defense over normal function. This response is essential for healing. As researchers at the University of California San Diego explain, the CDR is a “metabolic process that helps cells heal from injury or infection” and adapt to threats.