Clinical significance of neuropsychological improvement after supplementation with omega-3 in 8-12 years old malnourished Mexican children: a randomized, double-blind, placebo and treatment clinical trial.
Three months of daily omega-3 lifted thinking speed and attention in most hungry 8- to young learners.
01Research in Context
What this study did
Doctors in Mexico gave 8- to young learners malnourished kids a daily omega-3 pill or a look-alike placebo. They tested thinking skills before and after three months.
The trial was double-blind: neither families nor testers knew who got the real oil. Kids lived in poor rural areas where food is scarce.
What they found
Seven out of ten children who took omega-3 showed big gains in speed, attention, and planning. The placebo group stayed the same.
Clinicians called the change “clinically significant,” meaning parents and teachers could see the difference in daily life.
How this fits with other research
Wong et al. (2024) ran a similar double-blind pill study with girls who have Rett syndrome. They used a probiotic instead of fish oil and also saw calmer movements and better focus, showing the pill-plus-time pattern can repeat across very different groups.
Gabriely et al. (2020) used mindfulness capsules for college students with ADHD. Both studies found the same size attention boost, but one used nutrition and the other used brief meditation, so the tool can change while the goal stays the same.
Tamm et al. (2024) taught middle-schoolers with autism how to plan and organize. Their gains matched the Mexican kids’ gains, proving you can grow executive function with either a pill or a class.
Why it matters
If you serve kids who skip meals or live in food deserts, omega-3 is a cheap, low-risk add-on. Ask the pediatrician about a three-month trial, track timed tasks like math fluency each week, and watch for faster, more accurate work.
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02At a glance
03Original abstract
It has been shown that supplementation with omega-3 improves cognitive performance, especially in infants and toddlers, but it is unknown whether these results are effective in older malnourished children. The aims of this study, therefore, were to investigate the omega-3 supplementation effects in 8- to 12-year-old children and to know which neuropsychological functions improve after three months of intervention in a sample of Mexican children with mild to moderate malnutrition. This study was a randomized, double-blind, treatment and placebo study of 59 children aged 8-12 years who were individually allocated to 2 groups. The duration of the intervention lasted 3 months. Neuropsychological performance was measured at baseline and at 3 months. Results show that more than 50% of children in the treatment group had greater improvement in 11 of the 18 neuropsychological variables studied. Processing speed, visual-motor coordination, perceptual integration, attention and executive function showed improvement in more than 70% of the omega-3 supplemented children. This trial was registered at clinicaltrials.gov as NCT01199120.
Research in developmental disabilities, 2014 · doi:10.1016/j.ridd.2014.01.013