Transcranial direct current stimulation beneficial in BED
Emilee E. Burgess, from the University of Alabama at Birmingham, and colleagues examined the effect of tDCS on food craving, intake, binge-eating desire, and binge-eating frequency in 30 adults with BED or subthreshold BED. Participants received a 20-minute 2 mA session of tDCS targeting the dorsolateral prefrontal cortex and a sham session.
The researchers found that, compared with sham, tDCS correlated with decreased craving for sweets, savory proteins, and an all-foods category, with the strongest reductions seen in men (P < 0.05). Regardless of sex, tDCS correlated with decreases of 11 and 17.5 percent in total and preferred food intake, respectively (P < 0.05), and with reduced desire to binge eat on the day of real tDCS administration in males (P < 0.05). Eating less frequently for reward motives and greater intent to restrict calories predicted the reduction in craving and food intake, respectively.
"This proof-of-concept study is the first to find ameliorating effects of tDCS in BED," the authors write. "The results support investigation of repeated tDCS as a safe and noninvasive treatment adjunct for BED."
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