一到週末就頭痛？ 原來是咖啡因戒斷症候群上身

[MK]

http://tw.news.yahoo.com/article/url/d/ ... 1e0tc.html
更新日期:2009/02/06 12:28 記者蔣文宜／台北報導

30多歲的李小姐，每天上班習慣喝2杯沖泡式即溶咖啡，一到週末就開始頭暈脹痛、提不起勁；50歲的張女士平時從事金融業，工作時習慣以濃茶提神，每天5杯下肚，近來週末起床時卻感覺頭痛不已，正常睡眠後仍無法改善，最後腦神經內科醫師診斷後，才發現原來是咖啡因戒斷性引起的頭痛。


書田診所腦神經內科醫師黃婷毓表示，臨床上以咖啡最常引起戒斷性頭痛，其他像茶、巧克力、可樂，以及成藥中感冒藥或止痛劑中都含有多寡不同的咖啡因，以濃茶為例，一杯150cc浸泡超過5分鐘的茶葉，約含20至50毫克的咖啡因，每天持續喝4杯以上，一兩週後停止飲用就可能引發戒斷頭痛症狀。


根據醫學統計，約有5成的人每天規則飲用咖啡後，在停用的24小時內可能發生頭痛。黃婷毓說，門診中常見出現在每天或頻繁飲用咖啡或含咖啡因飲料的人，若每天飲用咖啡因超過200毫克並連續超過兩週以上，一旦停止或減少咖啡因攝取之後的24小時內就會發生頭痛。


發生戒斷頭痛的原因為何？黃婷毓指出，這與肝代謝咖啡因的酵素、基因及種族有關。她進一步說，肝代謝咖啡因或藥物的能力不好，殘留體內的濃度就高，另外，與本身神經系統對於咖啡因耐受程度也有關。


她解釋，並非每個人都會出現戒斷症狀，如果連續喝5天，停止飲用後卻出現頭痛時，可從逐步減少咖啡量攝取做起，同時多補充水分，選擇低咖啡因或茶葉沖泡時間縮短；若正處於急性頭痛期，則建議小睡片刻或以精油按摩減緩症狀。


黃婷毓說，每天2至3杯360C.C.的中杯拿鐵是正常範圍內，對健康並無妨礙，嗜喝黑咖啡者每天最好以一杯360 C.C.為限，若對咖啡因敏感者或易發生戒斷症狀者，每天攝取咖啡因量以不超過100mg為佳。而茶葉沖泡1分鐘咖啡因9至33mg，若沖泡逾5分鐘，就會超過50mg。

[smallant]

蟻佬還是繼續中咖啡毒好了

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