Nutraceutical options
Outside of eating disorders, specific foods and plants with health or medicinal properties – variously called nutraceuticals, phytoceuticals, or micronutrients – have emerging evidence in mental health. A 2022 expert academic consensus panel reviewed the literature to create clinical guidelines in this area.4 For major depression, adding omega-3 fatty acids to standard antidepressant treatment or standalone St. John’s wort have adequate evidence to recommend, while adjunctive probiotics, zinc, saffron, and curcumin have sufficient though less robust evidence. S-adenosyl methionine, vitamin D, and methyfolate showed only weak evidence for depression, while vitamin C, magnesium, creatine, N-acetylcysteine, folate, and monotherapy omega-3s do not have sufficient evidence to be recommended. For ADHD there was weak support for vitamin D, but no clear evidence for omega-3s, zinc, gingko, or acetyl L-carnitine. For anxiety, there is moderate evidence for ashwagandha and lavender in adults. A child psychiatry review suggests also trying chamomile for generalized anxiety based on the evidence in young adults, and underscores some data for N-acetylcysteine for OCD in particular.5
Many of these nutraceuticals exhibit small or moderate effects in a limited number of trials, with generally much less data for youth, compared with adults. While the same could be said for many on- and off-label uses of psychiatric medications for kids, clinicians would be wise to consider these highly specific nutritional interventions as items on the menu of treatment options rather than stand-alone treatments.
Revisitng the case study
Reflecting on Matt’s care, his pediatrician first assessed his dietary patterns, noting late-night eating and caffeine use with minimal hydration or fiber across the day. Recommendations for keeping fruit and vegetable snacks easily accessible as well as carrying a water flask are well received. They also discuss adding omega-3 fatty acids and probiotics with his morning stimulant while he awaits a referral for cognitive-behavioral therapy in order to address his depressive symptoms and minimize medication needs.
Beyond addressing food security and balanced family meals, specific interventions may be appropriate as initial treatment adjuncts for mild and some moderate mental illness. For more intense moderate to severe illness, nutritional psychiatry may be considered in combination with treatments with stronger evidence. At a community level, clinicians can help advocate for universal school meal programs to address food security, and so-called salad bar interventions to increase fruit/vegetable uptake among school-age children.
Dr. Rosenfeld is associate professor of psychiatry and pediatrics at University of Vermont and the Vermont Center for Children, Youth, and Families, both in Burlington. He has no disclosures.
References
1 Vohr BR et al. Pediatrics. 2017;139:S38-49.
2. Hosker DK et al. Child Adol Psychiatr Clin N Am. 2019;28(2):171-93.
3. Stice E et al. Int J Eat Disord. 2013;46(5):478-85.
4. Sarris J et al. World J Biol Psychiatry. 2022;23(6):424-55.
5. Simkin DR et al. Child Adolesc Psychiatric Clin N Am. 2023;32:193-216.