Yet while having two copies of the G variant of the mu opioid receptor gene may explain certain individuals' obesity problems,
it may be only a minor culprit in society's overall obesity crisis, Davis indicated to Psychiatric News. One reason for this belief is that only 4 percent of subjects in this study had two copies of the G variant of the gene.
Another reason is that hedonic eating, emotional eating, and binge eating explained only 51 percent of the BMI of subjects
in this study. In other words, "Lots of factors, most of which are probably unknown to us," explained the remaining 49 percent,