NAAA and Anxiety: N-acylethanolamine-hydrolyzing acid amidase (NAAA) is one of the enzymes that take part in the hydrolysis of N-acylethanolamines (NAEs) e.g., N-palmitoylethanolamine, which are bioactive lipids, involved in many physiological processes including pain, inflammation, anxiety, cognition, and food intake and therefore, regulate their endogenous levels and effects [72].