(1) Environmental damage and pollution. ② Overnutrition and undernutrition. ③ Insufficient exercise and excessive exercise. ④ Tension and pressure
Health status of college students in China;
① The level of some physical fitness indicators continues to decline. ② The level of vital capacity index decreased continuously. ③ Overweight and obese students increased significantly. ④ The detection rate of students' poor eyesight remains high.