Some 70.1 percent of South Koreans had problems with their mental health in the past year, a survey conducted by the state-affiliated National Center for Mental Health showed Sunday. The biennial report showed that while the annual figure decreased compared to 73.6 percent in 2024, the percentage of those who suffered at least five separate mental issues has substantially increased in the last decade, to 30.8 percent from 18.5 percent in 2016. The nationwide survey was first conducted in 2016 to