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#每日攝取量
NOW健康
每日狂吃21根香蕉換來鉀中毒昏倒 專家建議每日攝取量
【NOW健康 辰蘊如/台北報導】在通膨壓力下,許多人開始尋找經濟實惠的飲食方式,而香蕉因營養豐富且價格親民,常被視為代餐選擇。然而,近期有一名女性在1天內食用21根香蕉後,當晚因鉀中毒而失去意識昏倒造成頭部撞傷,幸好及時就醫避免更嚴重的後果。此因過量食用香蕉導致鉀中毒昏倒的案例,提醒大家飲食選擇上「過猶不及」的重要性。血液中的鉀濃度急劇上升 可能引發「高血鉀症」香蕉每100公克約含358毫克的鉀,其富含的鉀離子是維持心臟功能和肌肉收縮的重要電解質。根據衛生福利部建議,成人每日鉀攝取量約為3500毫克;若短時間內攝取過量鉀離子時,血液中的鉀濃度急劇上升,可能引發「高血鉀症」(Hyperkalemia)。台安醫院蔡曉蓉營養師表示,高血鉀症症狀包括肌肉無力、心律不整、噁心嘔吐,嚴重時可能導致心臟停止跳動。對於腎功能正常的健康成人,腎臟可以有效調節鉀離子平衡,但當其攝取量遠超過腎臟處理的能力,就可能發生中毒現象。蔡曉蓉營養師提醒,特別是患有腎臟疾病、心臟病或糖尿病的族群,更容易因鉀離子堆積而產生嚴重併發症,攝取量上要更加留意。以香蕉代餐易造成營養不均衡 建議「彩虹飲食法」蔡曉蓉營養師指出,即使是營養價值高的食物,也不應作為單一營養來源。香蕉雖然含有維生素B6、維生素C、膳食纖維和鉀離子,但缺乏蛋白質、必需脂肪酸等重要營養素,因此長期以香蕉代餐不僅造成營養不均衡,其高糖分也可能導致血糖波動,增加糖尿病風險。蔡曉蓉營養師建議若有經濟考量來選擇食材,可採用「彩虹飲食法」用搭配不同顏色的蔬果,確保營養攝取的多樣性。一般健康成人每日香蕉攝取量以1至2根為宜,還有慢性病患者應諮詢醫師或營養師的專業建議;選擇任何食物都應適量攝取,才能在節省開支的同時維護身體健康。# 首圖來源/Freepik更多NOW健康報導▸10/4講座》心絞痛不只大血管阻塞?認識CMD心臟危機▸2025/9/20(六)免費健康講座線上報名NOW健康:FB │ IG │ Threads │ YT │ 官方LINE │ 醫級邦 │ 健康安妞 Podcast❤溫馨提醒:歡迎轉傳「原始文章連結」分享,未經授權,請勿複製圖文轉貼本文。
2025/09/19
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