South Korea's National Intelligence Service (NIS) has reported that North Korean leader Kim Jong Un, who is 40 years old and known for heavy drinking and smoking, has regained weight and is experiencing obesity-related health issues, including high blood pressure and diabetes. These conditions, along with a family history of heart problems, put him in a high-risk group for heart disease. North Korean officials are actively seeking new medicines abroad to treat his health problems. Kim's health is a topic of international concern given his significant role in controlling North Korea's nuclear arsenal and the absence of a formally designated successor. The NIS also noted that Kim's preteen daughter, Kim Ju Ae, appears to be positioning herself as a potential heir, although this has not been officially confirmed.