Use the Following Terms to Answer -The Absence of Three Menstrual Cycles, While Significant, Is One

Use the following terms to answer:
$\begin{array}{|l|}\hline\text {Anorexia nervosa }\\\text { Binge eatin}\\\text {Binge eating disorder (BED) }\\\text {Grazing }\\\text {Pica }\\\text {Purging }\\\text { Rumination}\\\hline\end{array}$

-The absence of three menstrual cycles, while significant, is one no longer of the essential signs used to assess the presence of _______________.