Chronic diseases account for roughly 88% of all deaths in China, but changing the unhealthy habits linked to them remains a major challenge, said Dr. Shao Ruitai, a professor at the School of Population Medicine and Public Health at Peking Union Medical College.Healthy habits, including a healthy diet, going to bed early and reducing or avoiding smoking, are key to preventing chronic diseases, Shao said in an interview with CGTN's Health Talk on…