Neurological Illness and National Security: Lessons to Be Learned

Abstract

Overview

In 2016, US government personnel stationed at the US Embassy in Havana, Cuba, began reporting a set of unusual and troubling neurological symptoms. Over the following five years, similar cases appeared globally, leading to the designation of these events as anomalous health incidents (AHIs). The incidents were characterized by their unique features, incomplete data, lack of standardized clinical testing, delayed reporting, and the sensitive environment in which they occurred.

Findings

• Symptoms included sudden onset of loud noises (clicking, buzzing, high-pitched sounds) perceived inside the head, a sense of pressure, and phenomena that dissipated upon leaving a specific location.
• These were followed by vertigo, dizziness, imbalance, blurry vision, tinnitus, headache, nausea, cognitive dysfunction, and sometimes chronic disability.
• Clinical assessment by Chan et al. and Pierpaoli et al. at the NIH, using a cohort of 86 AHI participants and MRI studies on 81 AHIs and 48 controls, found few significant differences and no consistent evidence of brain injury.
• However, earlier studies did identify vestibular, oculomotor, and pupillary abnormalities as well as MRI changes in smaller cohorts.

Conclusion

• Despite limited current clinical and imaging findings, prior investigations by the US National Academy of Sciences and US Intelligence Community concluded that certain cases—with abrupt, location-dependent sensory disturbances—were unlike any known neurological disorder and could plausibly be caused by exposure to directed, pulsed radiofrequency energy (a form of electromagnetic field exposure).
• This connection to EMF (particularly pulsed RF energy) as a possible causative factor remains scientifically plausible and has not been discounted by all expert bodies, although the US Intelligence Community currently attributes many cases to other causes.
• The evidence supporting common causes in cases with sudden, location-specific symptoms remains weak, making the potential EMF-related health risk a significant consideration for ongoing research and public health responses.