https://oukosher.org/blog/consumer-news/u-s-news-world-report-is-kosher-food-safer/
https://progressivegrocer.com/quality-trumps-religion-3-5-kosher-food-buyers-mintel
I am guessing that this is just marketing then : (
A repeat in 2017: https://health.usnews.com/health-news/blogs/eat-run/articles/2017-03-02/is-kosher-food-healthier
submitted by /u/yhl-cis
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Source: Reditt