All of the devices listed here are allowed for sale as wellness devices in the United States. Wellness devices do not cure diseases, but they do support healthy functioning. Thousands of studies show photobiomodulation (light therapy) and pulsed electromagnetic fields (PEMF) have beneficial health effects with high safety profiles.
For example, this site does not claim that “brain therapy” devices cure dementia. We do claim that listed “brain therapy” devices are similar to those used in scientific studies using light on dementia patients that resulted in significant reduction in dementia symptoms.