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長滿危險息肉!年輕工程師三餐曝 醫搖頭:太多一級致癌物

ETtoday
2026/04/15 | 2分鐘閱讀

記者李佳蓉/綜合報導

一名林姓科技業工程師,因工作繁忙,三餐常吃熱狗堡、火腿便當以及泡麵。沒想到,年紀還不算大的他,在檢查中竟發現大腸裡已長出不少「危險息肉」。血液腫瘤科醫師廖繼鼎直言,這並非運氣不好,現代人餐餐加工肉品、超加工食品,正是大腸癌步步逼近的主因。

image

2根小熱狗風險增18%!醫揭大腸癌真相

「這不是在嚇你,這是已經很清楚的事實。」廖繼鼎醫師在YouTube「出神入化廖醫師」頻道中提到,世界衛生組織(WHO)早已將火腿、香腸、培根等加工肉品列為「第一級致癌物」;而國人愛吃的豬肉、牛肉等紅肉,則被列為「2A級可能致癌物」。醫師警告,「每天只要多吃50公克加工肉品,大腸癌的風險就會增加18%」,換算下來大約僅是2根小熱狗的份量。

為什麼影響會這麼大?廖繼鼎醫師分析,當攝取大量富含動物性脂肪的紅肉時,身體會分泌更多膽汁酸,這些物質進入大腸後,會被腸道細菌轉換成另一種成分「次級膽汁酸」。他比喻,這對腸道內的壞細菌來說簡直是吃到飽,次級膽汁酸會進一步破壞大腸黏膜,導致慢性發炎,「你吃得越頻繁,等於越在幫它們壯大」。

泡麵、零食傷腸道!「護城河被抽乾」壞菌長驅直入

除了肉品,如泡麵、零食等「超加工食品」中的人工添加物與乳化劑更是助紂為虐。廖繼鼎醫師將大腸黏膜形容為一座城堡,原本有一層黏液護城河在保護著,但這些人工添加物會將護城河裡的水慢慢抽乾,「等到保護層一旦變薄,壞細菌就更容易一路闖進來,增加癌症發生的機會」。

廖繼鼎醫師建議,預防大腸癌應先從飲食下手,徹底切斷「壞細菌最愛的糧草」。他強調,紅肉並非完全不能碰,但應避免餐餐都當主菜,建議一週攝取量應控制在500公克內,換算下來每天大約僅「一個手掌心」的大小。醫師也鼓勵其餘時間可多利用魚肉、白肉或豆類以補足蛋白質,並搭配大量蔬菜與發酵食品。透過飲食調整,「慢慢把腸道的環境拉回來」。

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本文轉載自ETtoday,原文標題:長滿危險息肉!年輕工程師三餐曝 醫搖頭:太多一級致癌物

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