We investigated whether vitamin-mineral supplementation could reduce serious rule violations. In this randomized, controlled, double-blind trial, young adult male inmates were included. For 15 weeks, they received a daily dose with vitamin-mineral supplements of approximately 100% Recommended Dietary Allowance (RDA) (n = 149), or a higher-dose formula (n = 150), or placebo (n = 150). Serious rule violations were the primary outcome. In the lower-dose group there were 39% fewer rule violations than in the placebo group (relative risk = .61; 95% confidence interval [CI]:.41–.90, p = .01). In the higher-dose group the difference did not reach statistical significance. About 100% RDA, but not higher doses supplements, resulted in less serious rule violations than placebo.

我们调查了补充维生素矿物质是否可以减少严重的违规行为。在这项随机，对照，双盲试验中，纳入了年轻的成年男性囚犯。在15周的时间里，他们每天接受约100％推荐膳食许可（RDA）（n  = 149）的维生素矿物质补充剂，或大剂量配方（n  = 150）或安慰剂（n  = 150）。严重违反规则是主要结果。与安慰剂组相比，小剂量组违反规则的情况减少了39％（相对风险= 0.61； 95％置信区间[ CI ] :. 41–.90，p = .01）。在高剂量组中，差异未达到统计学显着性。相对于安慰剂，约100％的RDA（但不是更高剂量的补充剂）导致的严重违规行为较少。