调查数据显示,许多家用筷子使用时间较长,有的甚至长达四五年。但专家说,筷子使用期不宜超过半年;否则,可能引发健康问题。颜色变化须及时更换普通筷子在使用3~6个月后,颜色会随着时间和使用的频率变深或变浅,这是因为筷子表面的可食用漆遭到了磨损。此外,筷子颜色发生变化,表示材质本身性质也发生了变化,而造成颜色变化的因素通常是食物、洗 Survey data show that many household chopsticks use a longer time, some even up to four or five years. However, experts say the service life of chopsticks should not exceed six months; otherwise, it may cause health problems. Color changes must be promptly replaced Ordinary chopsticks In use 3 to 6 months, the color will become darker or lighter with time and frequency of use, it is because the surface of edible paint has been worn chopsticks. In addition, the color of chopsticks changed, indicating that the nature of the material itself has also changed, and the factors that cause color changes are usually food, wash