A: While research is scant, kosher food is carefully supervised by certifying agencies as it's processed and prepared. (The most reliable agencies are OU, OK, KOF-K, CRC, and Star-K.) Every butchered animal is examined for disease, and produce is inspected for insects. Moreover, kosher companies must keep records of where their ingredients come from and demonstrate that their products contain only what's on the label. So when you're buying kosher, it can be argued that you know more accurately what's in your food.
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