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你知道吗？你我他的身体，天生就是一部生产黏液与口水的生物机器。当然，还有许许多多其他浓稠黏糊的化学分泌物……

一般来说，视乎不同状况而定，一个人在一天中会分泌大约1.5公升的黏液，这包括鼻涕和痰，大部分时候都会在毫无意识中吞回去（倒流回去）。

口水，或唾液也一样，人体每天分泌大约1到1.5公升至口腔中。每个人一生中的口水分泌量，甚至可填满两个普通泳池。

恶心吗？其实，不管是口水、鼻涕还是痰，除了帮助维持口腔、食道及气管的湿润，它们也拥有维持清洁和健康的作用哟！

黏液本身就含有具抗菌功效的酵素，包括溶菌酶和抗体等。唾液除了润滑食物，帮助吞咽，其实还具有辅助消化作用。唾液中含有一种消化酵素，淀粉酶，可以帮助局部分解淀粉，生成双糖（麦芽糖)，进入肚子里再继续分解成单糖（葡萄糖）

所以淀粉类食物吃起来，才会有丝丝的甘甜味！