The most comprehensive study ever conducted on Havana Syndrome patients found no evidence of secret weapons or foreign conspiracies for the health complaints that plagued American Embassy staff in Cuba starting in late 2016, according to a study published this month in the Journal of the American Medical Association or JAMA and a report from the National Institutes of Health.

The study, by Chan et al., used advanced imaging techniques to examine the brains of victims. The NIH report mirrored the recent conclusions of several U.S. intelligence agencies, which found that pre-existing health conditions, environmental factors, and conventional illnesses were able to explain the episode. Two earlier studies published in JAMA, in 2018 and 2019, found evidence of brain injury but lacked adequate control groups. The new study went to great lengths to have a well-matched group of control subjects.

While the researchers found no evidence of a sonic or microwave attack, they noted that it doesn’t prove there wasn’t one. While this may be true, using the same reasoning, they did not find any evidence for the involvement of space aliens, either. During the media briefing, the researchers were careful not to criticize the authors of the first two JAMA studies, which have been the subject of scathing critiques for their lack of adequate control groups and unconventional........

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