未煮自來水存風險

水是生命的泉源之一，人體缺水容易出現多種不適，嚴重者甚至可因脫水而令器官衰竭以致死亡。對於坊間不少人因貪方便，而直接飲用未經煮沸的自來水，趙醫生認為，由於本港食水已經過多重過濾和加入氯氣，故絕大部分「原水」中的雜質和細菌已被殺死。但部分樓宇的喉管，可能因老化失修而令金屬內層剝落，令水中重金屬含量增加。故如察覺到自來水有異味或顏色，建議安裝濾水器來過濾這些重金屬。但即使濾水器如何昂貴，仍難保證可完全隔絕自來水中的細菌，因此仍應將水完全煮沸才飲用，以殺死水中餘下的少量細菌，「已知的細菌，全都會於攝氏100度的水溫下死亡，所以將水煮沸後已適宜飲用。」趙稱。

　　另一方面，對於有長期飲用樽裝飲料習慣的市民，趙醫生認為，平日生活上難以時刻煲水飲用，適量飲用樽裝飲料補充水分並無問題，但不應長時間依賴，以免吸收過量的糖分或鈉、鉀、鈣等礦物質，令身體失去平衡，損害健康

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