An issue that periodically makes its way into public discourse — the impact and possible dangers to brain development and health posed by the ubiquitous use of cellphones — is being revisited thanks to a newly published scientific study in JAMA. However, rather than offering any definitive answers, the new research, led by Nora D. Volkow of the National Institutes of Health, raises more questions. Volkow and colleagues found that 50 minutes of cellphone use was associated with increased brain glucose metabolism — a marker of brain activity — in the region closest to the phone antenna.
