CICO doesn't explain the obesity epidemic? I thought it was pretty well-established that society's caloric surplus has risen pretty much in line with increasin

CICO doesn't explain the obesity epidemic? I thought it was pretty well-established that society's caloric surplus has risen pretty much in line with increasing obesity. CICO doesn't explain why people are consuming so much more than they expend, but it does seem that CICO explain the obesity epidemic.