“The strongest effect was observed for negative text combined with imagery,” Futurity reports. So basically, telling you junk food is evil and might kill you isn’t as effective as both telling and showing you your Kit-Kat-induced fate. (It’s sort of like the Ghost Of Junk Food Future appearing at your house to kill your buzz.) The researchers also monitored participants’ brains with electroencephalography electrodes and found that warning labels shifted decision-making from impulse areas of the brain to more thoughtful, controlled areas. While these labels were effective in altering behavior, we can’t say we wish for a day when skulls-and-crossbones cover our candy bar wrappers. We hope the participants in the study were at least compensated decently, because they’ll probably never look at the snack aisle the same way again.