I noticed a while back that eating disorders were no longer an active area of public anxiety. So I looked at Google Trends since 2004 (click for full size)
If the 2004 baseline were around 75 and the current is 25 that's a 50/75 or 2/3 decline from peak. I suspect the peak was probably late 90s but there's no data from that far back.
Human physiology has not changed since 2004. I suspect the change was culturally driven.
