Mediterranean diet in preschool
A recent study reported that combining a Mediterranean dietary pattern with physical activity may help slow obesity starting in preschool-aged children, though it did not detect meaningful improvements in other cardiovascular risk markers (diariodenavarra.es). The authors framed the finding as an early‑life preventive signal rather than a broad cardiometabolic treatment effect in older groups (diariodenavarra.es).
A Mediterranean-style diet paired with regular exercise helped preschool girls at risk of obesity lower body mass and body fat in a Spanish clinical trial, but the program did not shift blood pressure, cholesterol, glucose, or insulin after one year. (link.springer.com) The trial enrolled 206 children ages 3.0 to 6.9 in Zaragoza, Córdoba, and Santiago de Compostela, all with normal weight or overweight and at least one parent with overweight or obesity. After 12 months, 170 children completed follow-up. (link.springer.com; en.iisaragon.es) Families in the intervention group got monthly nutrition education, fish and olive oil, and physical activity sessions twice a week. The control group got general child-health advice without a diet or exercise program. (link.springer.com; en.iisaragon.es) In the main results, girls in the intervention group showed lower body mass index and fat mass than girls in the control group. The intention-to-treat analysis found a body mass index difference of minus 0.68 kilograms per square meter and a body mass index z-score difference of minus 0.34. (link.springer.com) The same study did not find meaningful between-group changes in waist-to-height ratio, blood pressure, blood lipids, glucose, or insulin. IIS Aragón said many children started the trial with normal cardiovascular values, which may have limited how much those markers could change. (link.springer.com; en.iisaragon.es) The study was published March 24, 2026, in the *European Journal of Pediatrics* and registered as NCT04597281. The authors called it the first randomized controlled trial to test a Mediterranean lifestyle program in preschool children at risk of obesity. (link.springer.com) That focus on ages 3 to 6 comes as health agencies keep pushing prevention earlier in childhood. World Health Organization guidance for children under 5 says they should spend at least 180 minutes in physical activity spread through the day, with at least 60 minutes of moderate-to-vigorous activity by age 3 to 4. (who.int) The obesity backdrop is broad across Europe. The World Health Organization’s latest European Childhood Obesity Surveillance Initiative report, covering 2022 to 2024, found 25% of children ages 7 to 9 were living with overweight, including obesity, and 11% with obesity across 37 countries. (who.int) Evidence on heart-risk markers in children has also been mixed. A 2024 systematic review in *JAMA Network Open* found randomized trials of Mediterranean-diet programs in children and adolescents had not established consistent improvements across blood pressure, cholesterol, glucose, insulin, and insulin resistance markers. (pubmed.ncbi.nlm.nih.gov) The new trial leaves a narrower takeaway than the phrase “Mediterranean diet” often suggests: in this study, the measurable effect showed up in body composition, in preschool girls, over 12 months. The authors said larger studies are needed to test whether the sex difference holds up. (link.springer.com)
