很多消費者認為，純凈水雖然干凈，但沒有任何有益的礦物質，長期飲用會把體內的微量元素都溶解排出，造成營養缺乏，不利于健康。還有消費者認為，飲用純凈水會脫鈣，導致骨質疏松。

　　

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　　這是真的嗎?

　　1、純凈水是啥東西?

　　純凈水是采用符合生活飲用水衛生標準的水為原料，通過離子交換、反滲透、蒸餾等工藝制備而成的飲用水。它的特點是離子含量低、水的硬度低，因為它幾乎不含有礦物質，用來燒水的話，也不會形成水垢。純凈水足夠清潔，十分安全，適宜飲用。

　　2、喝水的目的是補水，而不是補充營養

　　從對純凈水的概念解釋來看，純凈水幾乎不含礦物質。所以，必然缺乏人體必需的礦物元素了。但喝水的目的是補水，而不是補充營養!雖然，水貴為人體所需的七大營養素(水、蛋白質、脂肪、碳水化合物、礦物質和微量元素、維生素、纖維素)，在人體內起著重要作用(人體機體組織;參與體內生化反應;散發熱量，調節體溫;潤滑作用等等)，但水在人體中的作用并不是供給礦物質及微量元素。

　　人體所需的營養物質，主要是通過攝入其它食物來滿足的，且其它食物的營養物質遠遠甩過水幾十條街，沒必要糾結水(無論是純凈水還是礦物水)中那一點點可憐的“營養物質”的。造成營養缺乏的根本原因是膳食不平衡，而不是喝了什么水。

　　

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　　3、喝純凈水，缺鈣甚至脫鈣?

　　鈣在人體有重要作用，包括肌肉收縮、血管擴張收縮、激素和酶的分泌，以及神經信號傳導等。缺鈣會影響人體健康。

　　人體缺鈣(甚至脫鈣)的主要原因是攝入食物中鈣含量不足，當然，也與維生素D水平、激素水平、年齡、光照、運動等因素有關。沒有證據表明，缺鈣(甚至脫鈣)與喝水有關。

　　事實上，人體體液的離子濃度是有平衡機制的。成年人幾十公斤的體液，每天飲水量會有多少?這點兒飲水量對于鈣離子濃度的影響是非常小的。所以，不用多慮的。

　　4、沒有出現過因飲用純凈水而不利于健康的案例

　　網絡上經常流傳著關于“純凈水驚魂”的各種故事，雖然故事的主角頻繁更新，但故事的主題從未改變，那就是：飲用純凈水而不利于健康。事實上，這是一個謠言!

　　純凈水在發達國家和地區的普及率是高達80%以上，但沒有出現過因飲用純凈水而導致健康受損的案例。

　　5、不要被商業炒作沖昏了頭腦

　　有些水企業為了達到打擊競爭對手等的目的，在營銷宣傳過程中，可能會稱純凈水(或者其它水)喝多了會出現什么什么問題來嚇唬消費者，然后再搬出自家飲用水的廣告來吸引消費者，這其實是非常無聊的營銷方式。所以，消費者不要被商業炒作沖昏了頭腦，理性地面對營銷宣傳。

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