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Back健康網》吃太鹹傷腎可能也傷腦! 研究揭男性記憶力衰退快
健康網》吃太鹹傷腎可能也傷腦! 研究揭男性記憶力衰退快
Health
自由时报7 hours agoHealth2 min readChinaView translation

健康網》吃太鹹傷腎可能也傷腦! 研究揭男性記憶力衰退快

Quick Look

營養師張馨方引用研究指出,鈉攝取量較高的男性情節記憶衰退速度較快,但整體研究族群及女性未發現相同顯著關聯。研究追蹤超過1200名認知功能正常的中老年人長達6年,另一項發表於《Neurobiology of Aging》的研究亦得出類似結論。張馨方強調,目前人體研究結果不一,無法直接認定高鹽飲食會加速大腦老化或增加失智症風險,但提醒日常飲食仍應減鹽,以護腦並維持血管健康。

AI-generated summary

Why It Matters

高鈉飲食與高血壓風險相關,而高血壓又是影響腦血管健康與認知功能的重要因素。動物研究顯示高鈉可能影響大腦神經功能,但人體研究結果尚不一致。

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2026/10/15 08:23

營養師張馨方表示,研究發現,鈉攝取量較高的男性,對於情節記憶衰退速度較快,但整體研究族群及女性,則未發現相同的顯著關聯;情境照。(圖取自freepik)

〔健康頻道/綜合報導〕吃太鹹不只影響血壓或增加腎臟負擔。營養師張馨方表示,1項研究追蹤逾1200名認知功能正常的中老年人長達6年時間,結果發現,鈉攝取量較高的男性,情節記憶衰退速度較快,但整體研究族群及女性,則未發現相同的顯著關聯。不過,她強調,目前人體研究結果並不一致,所以不能直接認定吃太鹹就會加速大腦老化、增加失智症風險,但提醒日常飲食仍應減鹽,有助護腦、照顧血管健康。

為什麼吃太鹹可能與大腦健康有關?張馨方於臉書粉專發文表示,目前研究主要關注血壓與血管健康、大腦神經功能2個方向。長期鈉攝取過多,可能增加高血壓風險,而高血壓也是影響腦血管健康與認知功能的重要因素,此外,動物研究發現,高鈉飲食可能影響大腦的神經功能,研究者也推測可能涉及發炎與血管變化,但在人類身上是否存在相同機轉,目前仍需要更多研究確認。

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研究:女性並未發現相同關聯

另1項發表於《Neurobiology of Aging》的研究,追蹤觀察1208名平均年齡約71歲、認知功能正常的中老年人,時間長達6年的認知變化發現。結果發現,鈉攝取量較高的男性,對於自己曾經歷過的事情,如昨天和誰吃飯、上次旅行去哪裡等「情節記憶」衰退速度較快;但整體研究族群及女性,並未發現相同的顯著關聯。

不過,張馨方提醒,這項研究也有一些限制,即鈉攝取量只在研究開始時測量一次,且未納入烹調或餐桌上額外添加的鹽,因此無法完整反映長期的鈉攝取情況。她也指出,這也不代表鈉吃越少,大腦就越健康,部分研究甚至觀察到鈉攝取較低與認知功能下降之間的關聯。不過,這不代表低鈉飲食會傷害大腦,也不能證明兩者存在因果關係。

日常飲食護腦、顧血管這樣吃

想顧好大腦,日常可以怎麼做?她提及,與其等到記憶力變差才開始注意,不如從每天的飲食做起,包括:

●少喝湯汁:泡麵、火鍋湯底不必全部喝完。

●減少加工食品:香腸、火腿、醃漬物不要天天吃。

●調味減量:醬油、沙茶醬、沾醬適量即可。

●多吃原型食物:以蔬菜、水果、全穀雜糧等食物為日常飲食基礎。

張馨方強調,顧大腦不只要動腦,也別忽略血管健康。世界衛生組織建議,成人每日鈉攝取量應低於 2000毫克,相當於食鹽少於5公克。減鹽不是要吃得索然無味,而是慢慢降低對重口味的依賴,讓健康成為可以長期維持的生活習慣。

What to Watch

AI outlook — possibilities, not facts

  • 未來將有更多長期追蹤研究探討鈉攝取與認知功能的關係,特別是區分性別差異。

    Likely · Within months

Open Questions

  • 高鈉攝取是否真的會透過發炎或血管變化機轉影響人類大腦功能?
  • 長期鈉攝取量的變化是否會對認知功能產生不同影響?
  • 女性在高鈉飲食下是否有其他未被偵測到的認知變化?

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