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Joseph Hertzlinger
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Preservatives and IQ scores
One study of one-million students showed people who ate a lunch without preservatives or artificial dyes scored 14% higher on IQ tests. More data: http://www.nvcc.edu/home/rgreen/PowerWeb05/Intelligence%20The%20Surprising%20Truth.pdf http://www.feingold.org/Research/BLUE/Page-11-NYschools.pdf AFAICT, the actual publication [...]
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