胃酸的作用是什么？人的胃每天要分泌1.5-2.5升胃液，胃液的主要成份是胃酸、胃蛋白酶、粘液、内因子、水和电解质等。胃酸实际上就是稀盐酸，胃液的PH值最低时是0.9-1.5，胃酸的酸度要比食用醋、苹果汁和橙汁（PH值一般2.0-2.
For the residents of Wisteria Lane, the holiday season could only begin once the decorations came out.
Eating spicy food six or seven days a week — even just once a day — lowered mortality rates by 14 percent， according to a large 2015 study by Harvard and China National Center for Disease Control and Prevention.也有研究表明，饮食中富含辛辣食物的人，食欲会降低，一天中总体上吃的食物更少。
