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「純天然,零化學」就是對嗎?
科技進步讓我們比以前更快捷獲取知識。不同研究報告揭示各種食安危機與個人護理安全問題,故此,近年各類消費類產品包裝都標誌「100% 純天然」,「無添加」或「零化學」等字眼。但世界上的一切全都由「化學物質」組成,例如水的化學式樣是 H2O ,而氧氣的化學式樣就是 O2。水和氧氣這些「化學物質」都是人體必須且是有益。所以,商家高呼「零化學,不含任何化學物質」可評為不準確。 那選擇「純天然」就沒錯? 以檸檬或橘子為例,這些柑橘類水果可幫助消化,排毒美肌,但內含一種物質(呋喃香豆素 furanocoumarins )卻有感光特性,如將檸檬汁塗於皮膚上再受紫外線 UVA 照射,化學反應會使皮膚變黑,嚴重更會出現紅斑或灼傷狀況。 基於以上水及檸檬的例子,無論選擇食物或任何護理產品,了解標籤成份背後對人體有什麼好處及壞處,挑選「有益的化學物質」,屏棄「有害化學物質」才是最科學,最合理的價值觀。
