点击关注 每日精品杂志 咖啡行业交流请加 私人微信前街咖啡，微信号： (长按复制) FrontStreetCoffee 通常人们会选择饮用咖啡、茶和能量饮料来提神，实质上都是摄取一定量的咖啡因。但摄取这种无色无味的成分时，人类大脑和身体到底会发生什么呢？ 1、大多数健康成年人每天最多能消耗400毫克咖啡因，这相当于5罐4盎司的红牛；2、摄取时，胃部先吸收咖啡因，大约需要1至2小时才能进入血液循环；5至6小时后，我们的大体才能消耗掉一半的咖啡因；3、适度摄入的咖啡因能够提高记忆力，对未经依赖的人来说效果尤为明显；4、适量的咖啡因可以让我们的精力更集中，但过量则可能引发烦躁感，让原本想要提升效率的事情反而变得困难。

5、当我们喝下含有咔哒（Adenosine）的饮料时，它抑制了脑内腺苷，从而产生一种振奋人的感觉。同时，它还促进了多巴胺（Dopamine）和麸醯胺酸（Glutamine）的分泌，不仅提升清醒度，还降低了抑郁风险。6、一些研究表明，即使短暂地减少食欲，但长期来看，由于影响时间太短或只对某些动物有效，没有足够证据证明频繁喝下含有较高浓度caffeine drinks会帮助我们减肥。

7、小剂量下的coffee can immediately increase blood pressure but will not cause harm;8,certain amounts of caffeine can elevate the acidity of stomach acid, potentially causing heartburn symptoms;9,excessive intake of caffeine can lead to an increase in adrenaline levels, resulting in irritability and emotional instability.

10,caffeine has been shown to speed up the onset and prolong the duration of certain medications. For example, Excedrin is a well-known pain reliever that contains Acetaminophen (Tylenol), Aspirin, and Caffeine. Research indicates that when used together with specific pain-relieving drugs like these three components work faster than separately taken.

11,Caffeine is often employed as a stimulant for athletes' training programs worldwide due to its ability to alter human perception and interaction with their surroundings. 12,"Caffeine combined with electricity could help humans escape natural sleep-wake cycles," said Dr Charles Czeisler from Harvard University.

13,National Geographic magazine described caffeine's influence thusly: "It helped humans transition from an agricultural society to an industrial one." Various beverages' caffeine content comparisons are provided below:

First row: brewed coffee, drip coffee maker coffee,

instant coffee

Second row:

Black tea

Green tea

White tea

Low-caffeinated coffee

Author: Jiang Jingxin Source: Huahua Magazine Disclaimer: The source article comes from 'Huahua Magazine'.