Processed Meat加工肉

Food · Misleading · 工程食品

IARC Group 1 是证据确定性, 不是风险大小 · 50 g/天相对风险 +18% · 亚硝胺 + HCA/PAH + 高钠是核心机制 · 新鲜肉是 2A 不是 1

What is processed meat · the definition matters

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加工肉是什么 · 定义很重要

Processed meat is not 'any meat that has been processed', but specifically meat preserved or flavored by salting, curing, fermentation, smoking, or the addition of chemical preservatives. Concrete examples:

Bacon, cured porkHam, luncheon meatSausage, salami-style sausage, hot dogsSalami, deli sliced meatsJerky (nitrite-containing versions)Meat floss, various heavily brined meats
Not included: a fresh pork chop you roast at home, or stir-fried chicken — those are unprocessed meat.

The distinction from unprocessed red meat is critical: IARC gave processed meat and unprocessed red meat (beef, red-meat) different classifications — the former is Group 1 (carcinogenic, sufficient evidence), the latter Group 2A (probably carcinogenic, strong but not sufficient evidence). This one-tier difference matters, and the IARC scene below explains it in detail.

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