Can BroadBand Light (BBL) on neck damage thyroid gland?

Broadband light, such as that emitted by certain types of lamps or devices, typically doesn't pose a direct risk of damaging the thyroid. However, prolonged exposure to very bright light, especially in the blue spectrum, could potentially disrupt circadian rhythms and melatonin production, which may indirectly impact thyroid function over time.
Jeff Rapaport MD FAAD
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Castle Connolly Top Doctor

Thanks for doing your research. The good news is that there is more than 20 years of BBL use and data without evidence of any damage to the thyroid. We regularly treat the neck and chest in our office and have many patients who have been doing this for over a decade now.