The US Food and Drug Administration is again proposing a ban on electrical stimulation devices used to reduce or stop self-injurious or aggressive behavior, the agency said in a statement Monday.

Please provide your email address to receive an email when new articles are posted on . A wearable electrical stimulation device improved hair density and thickness for men with androgenic alopecia.

Proponents of ab stimulators claim they can help improve abdominal muscle tone as they force the muscles to repetitively contract. However, they will not burn fat or cause significant weight loss.