North Korean leader Kim Jong Un has been classified by South Korea’s National Intelligence Service as suffering from severe obesity, with his body weight estimated to exceed 140 kilograms. South Korean lawmaker Youn Kun-young made the disclosure on Wednesday, September 30, 2026, citing a fresh assessment from Seoul’s spy agency regarding the leader’s physical health.
Intelligence Assessment Places Kim Jong Un at Over 140 Kilograms
The latest intelligence evaluation indicates that Kim’s weight has climbed past the 140-kilogram mark, placing him in an extreme obesity bracket. Alongside heavy smoking habits, this puts the North Korean leader at heightened risk for cardiovascular conditions and heart-related disorders, according to lawmakers briefed by the National Intelligence Service.
Despite the high-risk classification, South Korean intelligence reported no immediate indications of debilitating physical limitations. Youn noted that Kim continues to handle daily routines without apparent trouble, showing capability for brisk movement and climbing stairs quickly. Observers attribute this functional stability to constant, close monitoring by his personal medical team.
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High-Calorie Diet and Family Medical History
Observers tie the leader’s upward weight trajectory to a diet rich in high-fat, high-calorie delicacies. Paul Smart, a former executive chef at the Hotel Metropole Hanoi who worked alongside Kim’s personal cook during the 2019 summit, described the leader’s preference for luxury foods like caviar, lobster, and foie gras.
This culinary lifestyle pairs with a vulnerable family medical background. Both his father, Kim Jong Il, and his grandfather, Kim Il Sung, dealt with obesity and heavy smoking during their lives. Both predecessors ultimately died from heart attacks, creating what health experts view as a concerning cardiovascular pattern for the current leader.
International Attention on Health and Succession
Global monitors track Kim’s medical status closely because sudden incapacitation in Pyongyang could raise critical questions regarding political stability and leadership succession in the nuclear-armed state. Speculation about his health has surged before, notably in 2020 when he vanished from public view for roughly 20 days after missing his grandfather’s birth anniversary celebrations, sparking unverified rumors of serious surgery.
Common Questions Regarding the Intel Report
What is Kim Jong Un’s estimated weight according to South Korean intelligence?
South Korean lawmaker Youn Kun-young cited intelligence reports placing Kim Jong Un’s weight at over 140 kilograms, putting him in an extreme obesity category.

Does the intelligence report indicate any current health failures?
No. South Korean intelligence found no signs of fatal health problems or physical struggle during day-to-day activities, aided by continuous oversight from a dedicated medical staff.
What health risks does Kim face due to his lifestyle?
Experts point to a high risk of cardiovascular disease stemming from severe obesity, heavy smoking, a rich diet, and a family history of heart-related deaths.