咖啡对人体的七种奇特影响

咖啡中含有数百种生物活性化合物，其对人体的作用远超咖啡因本身1。研究表明，咖啡会通过多种机制对人体产生影响。

约三成人群在饮用咖啡后会产生排便欲望1。咖啡因可能增加某些青光眼或眼压升高患者的眼内压力1。此外，咖啡可减少甲状腺药物左旋甲状腺素的吸收1，这对需要服用该药物的患者具有临床意义。

从代谢角度看，咖啡中的二萜类化合物咖啡醇和咖啡因醇可增加总胆固醇和低密度脂蛋白胆固醇1。咖啡中的多酚类物质与铁结合，可显著降低非血红素铁的吸收1。同时，咖啡会刺激胰腺释放蛋白酶，即使在没有食物摄入的情况下也会发生这种反应1。

Coffee's effects on human health extend far beyond its caffeine content, with hundreds of bioactive compounds in the beverage triggering diverse physiological responses 1. Approximately one-third of coffee drinkers report an urge to have a bowel movement after consuming the beverage 1. Additionally, caffeine may increase intraocular pressure in some patients with glaucoma or elevated eye pressure 1.

The interactions between coffee and medication are also significant. Coffee reduces the absorption of levothyroxine, a common thyroid medication 1. Meanwhile, diterpenes found in coffee—specifically cafestol and kahweol—raise both total cholesterol and LDL cholesterol levels 1. Polyphenols in coffee bind to non-heme iron, substantially decreasing its absorption in the body 1. Furthermore, coffee stimulates the pancreas to release proteases even in the absence of food consumption 1.