Have you heard of the “Long” form and the “Short” form of the serotonin transporter promoter region or of 5-HTTLPR? What do these terms mean? Whether we like it or not, mental health professionals are now frequently exposed to the terms/abbreviations like 5-HT, serotonin transporter, SERT, 5-HTT, SLC6A4, serotonin transporter promoter, 5-HTT, 5-HTT-linked polymorphic region, 5-HTTLPR. Let’s…