打嗝是一种常见的生理现象,通常是由于胸、腹腔之间的膈肌受刺激后收缩引起的。健康人出现打嗝现象多与饮食有关,特别是饮食过快、过饱,摄入过热、过冷的食物,喝碳酸饮料、啤酒等。另外,外界温度变化和过度吸烟亦可引起打嗝。美国达拉斯胃肠病学家肯尼斯·布朗博士表示, Hiccups are a common physiological phenomenon usually caused by contraction of the diaphragm between the chest and the abdominal cavity upon stimulation. Hiccups and healthy people appear more related to diet, especially over-fasting, over-fed, overheated, overcooled foods, drink carbonated drinks, beer and so on. In addition, outside temperature changes and excessive smoking can cause hiccups. Dr. Kenneth Brown, a Dallas gastroenterologist in the United States,