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Back健康網》益生菌不只顧腸道! 研究揭連吃6個月 阿茲海默症指標降
健康網》益生菌不只顧腸道! 研究揭連吃6個月 阿茲海默症指標降
Health
自由时报2 hours agoHealth3 min readChinaView translation

健康網》益生菌不只顧腸道! 研究揭連吃6個月 阿茲海默症指標降

韓國雙盲試驗發現,有早期認知障礙的長者每天食用3株益生菌,血液中與阿茲海默症相關的pTau181顯著下降。

Quick Look

食農專家韋恩引述韓國研究指出,有早期認知障礙的長者每天食用3株益生菌24週後,血液中與阿茲海默症相關的pTau181顯著下降,記憶與視覺空間組織能力亦有改善。

AI-generated summary

Why It Matters

韓國一項發表於2026年8月《Journal of Alzheimer’s Disease》的研究探討益生菌對早期認知障礙的影響。

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益生菌不只有助腸道健康,對於大腦可能也有助益。食農專家韋恩表示,韓國一項雙盲試驗發現,讓有早期認知障礙的長者每天吃3株益生菌,24週後,其血液中與阿茲海默症相關的pTau181顯著下降,記憶與視覺空間組織能力測驗也有所改善;至於吃安慰劑的組別,則沒有明顯變化。這項研究2026年8月發表在《Journal of Alzheimer’s Disease》。

韋恩於臉書粉專發文表示,1項研究由韓國朝鮮大學光州阿茲海默症與相關失智症世代研究中心、全南大學醫院的團隊進行的研究,納入87位受試者來自光州長期追蹤認知退化的GARD世代研究。受試者隨機分成2組,40人吃益生菌、47人吃安慰劑,受試者和研究人員都不知道誰吃了哪一種。益生菌代號KL-P301,由動物雙歧桿菌、發酵乳桿菌、短乳桿菌3株組成,粉末可以直接吃,也可以泡水喝。

韋恩表示,pTau181是第181個位置被磷酸化的tau蛋白。阿茲海默症患者腦中的tau蛋白會異常折疊、糾結成團,卡在神經細胞裡,而在失智症狀出現之前,血液中的pTau181往往就已開始升高,所以被當成追蹤阿茲海默症病理變化的血液指標。

除了pTau181,另外2個神經損傷指標GFAP和NfL,在益生菌組維持穩定,在安慰劑組則顯著上升。認知表現方面,益生菌組的臨床失智評分總和(CDR-SB)有改善,主要來自記憶項目,臨摹幾何圖形與複雜圖形這類考驗視覺空間組織能力的測驗分數也進步;安慰劑組在回想並畫出先前看過圖形的測驗上,分數則明顯退步。

韋恩說,研究團隊認為,pTau181下降和視覺空間能力保持住這2個結果同時出現,支持腸道菌、免疫系統與大腦之間的交互作用可能參與早期神經退化的過程。不過,此次研究量的是血液指標,並未使用正子造影直接看腦中的tau蛋白。研究團隊也表示,下一步計畫用規模更大、時間更長,並搭配tau與類澱粉蛋白正子造影的試驗確認效果。

What to Watch

AI outlook — possibilities, not facts

  • 研究團隊計畫用規模更大、時間更長並搭配正子造影的試驗確認效果

    Likely · Within months

Open Questions

  • 未來更大規模的試驗是否能證實此效果?
  • 是否會搭配正子造影直接觀察腦中的tau蛋白?

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