“…For these conclusions, we needed a new statistical approach, a multilevel hierarchical model. 12,13 Continuous intervention is given by means of weekly talks on the local radio, press releases, TV programs, participation in parents and teachers’ meetings and periodically having ludic and playful camping with the students. Comparison of Total Cholesterol levels in the students of the same grades as of ten years earlier showed a statistically significant difference for the better, lower levels.…”