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Back營養師解析:常吃紅蘿蔔與降低癌症風險相關,但非直接防癌證據
營養師解析:常吃紅蘿蔔與降低癌症風險相關,但非直接防癌證據
Health
自由时报2 hours agoHealth2 min readChinaView translation

營養師解析:常吃紅蘿蔔與降低癌症風險相關,但非直接防癌證據

Quick Look

營養師老辜引用系統性回顧指出,每週攝取約5份(每份80克)紅蘿蔔與癌症風險下降20%相關,但強調為觀察性研究,僅顯示關聯而非因果關係,並警告勿誤信β-紅蘿蔔素補充品具防癌效果。

AI-generated summary

Why It Matters

紅蘿蔔傳統被認為有益視力,近年研究探討其與癌症預防的潛在關聯。本文引用一項統整50項前瞻性研究的系統性回顧與統合分析。

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2026/09/24 08:16

紅蘿蔔不只顧眼睛!營養師老辜表示,研究指出,受試者每週吃下一定份量紅蘿蔔,顯示與癌症風險下降20%相關;示意圖。(圖取自freepik)

〔健康頻道/綜合報導〕紅蘿蔔不只有助視力保健,吃對也可能遠離癌症風險。營養師老辜表示,一篇統整50項前瞻性研究、涵蓋超過5萬名癌症個案的系統性回顧與統合分析發現,常吃紅蘿蔔者,整體癌症發生風險較低;研究更估計,每次吃80克、每週約5份,與癌症風險下降20%有關。不過,他提醒,這篇研究屬於觀察性研究,只能說兩者具有關聯,並非直接證明吃紅蘿蔔就能防癌。

老辜於臉書粉專發文指出,一篇系統性回顧與統合分析,比較紅蘿蔔攝取量與癌症發生風險後發現,相較於較少吃紅蘿蔔的人,經常攝取者整體癌症風險約低10%,且呈現劑量效應關係,也就是說,吃得越多,與較低癌症風險之間的關聯越明顯。研究甚至估計,每次以80g為一份,每週約吃5份紅蘿蔔,與癌症風險下降20%有關。

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不過,老辜表示,研究雖顯示攝取紅蘿蔔與較低癌症風險有關,也別急著補充β-紅蘿蔔素保健品。他提及,過去常認為紅蘿蔔的健康效果來自β-紅蘿蔔素,但大型臨床試驗並未證實補充β-紅蘿蔔素可預防癌症,甚至某些高劑量補充還可能帶來傷害。

研究者因此提出另一種可能,紅蘿蔔帶來的健康效應,或許未必來自單一成分,而是整個食物中其他植化素的綜合效應。例如:紅蘿蔔含有一類較少被討論的成分,叫做聚炔類化合物(polyacetylenes),包含falcarinol與falcarindiol等。這些成分在細胞與動物研究中,被認為可能與發炎調節及癌症相關機制有關。

老辜強調,這篇研究主要來自前瞻性觀察研究,只能解讀為「吃較多紅蘿蔔與較低癌症風險有關」,不是直接證明吃紅蘿蔔具有防癌效果,未來仍需更多介入性研究確認。

老辜提醒,紅蘿蔔絕對不是抗癌藥,但若平常蔬菜吃得不足,在餐盤中增加一份紅蘿蔔,仍是簡單、便宜且值得長期累積的健康飲食選擇。

Open Questions

  • 紅蘿蔔中的哪些具體成分對癌症風險具有影響?
  • 長期介入試驗是否能證實紅蘿蔔攝取與癌症發生率降低的因果關係?
  • 聚炔類化合物如falcarinol在人體中的生物利用度及安全性如何?

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