One of the oldest controversies about ADHD medication treatments is their effect on physical growth.
In fact, this still remains controversial, as I explain in a special science pull out in chapter 8 of Getting Ahead of ADHD. Stimulant medicines suppress appetite, and this is why kids may fall behind on growth. The most recent study, published just a few months ago in June of this year, followed a large group of boys from age 7-10 up to age 25. They were grouped as medication treatment having been: (a) negligible, (b) inconsistent, or (c) consistent.Ongoing treatment with stimulant medication yielded about a 2.4-centimeter (about 1-inch) reduction in final adult height. Other prospective studies using other methods do not see this effect. While some controversy remains, it seems likely that ongoing use of stimulant medication can suppress adult height by 2-3 centimeters, at least in boys. However, this and other findings could also be interpreted as suggesting important variation in how children respond—some may see a large height reduction, some may see no height reduction. The take home message is that your prescribing physician should carefully track your child’s growth trajectory and if the child is falling off the growth curve, discuss with you the options for a reduction, pause, or changing in the treatment.
Young adult outcomes in the follow-up of the multimodal treatment study of attention-deficit/hyperactivity disorder: symptom persistence, source discrepancy, and height suppression.Swanson JM, Arnold LE, Molina BSG, Sibley MH, Hechtman LT, Hinshaw SP, Abikoff HB, Stehli A, Owens EB, Mitchell JT, Nichols Q, Howard A, Greenhill LL, Hoza B, Newcorn JH, Jensen PS, Vitiello B, Wigal T, Epstein JN, Tamm L, Lakes KD, Waxmonsky J, Lerner M, Etcovitch J, Murray DW, Muenke M, Acosta MT, Arcos-Burgos M, Pelham WE, Kraemer HC; MTA Cooperative Group. J Child Psychol Psychiatry. 2017 Jun;58(6):663-678. doi: 10.1111/jcpp.12684. Epub 2017 Mar 10.