Actually, today is different. It is not easy for ancient people to live to 50 years old. Li Shimin's age is the "normal" age of death in ancient times, but embarrassingly, all the generals around Li Shimin lived longer than him. Even, many people have reached the age of 70, so there are personal factors in Li Shimin's death.
Li Shimin's old age was not so dreary, and his early illness still made him uncomfortable. We all know that Li Shimin was an emperor. He walked on the front line all the year round, accompanied by war. There are not many times of charging, so at a certain age, the body can't carry it. Dark wounds on the body are a problem. When you are young, you can still carry your physical fitness. When you are old, you don't have much time to exercise yourself.
Especially after Li Shimin became the emperor, his quality of life was much worse. During the war, he worked for the people everywhere, and during the period of peace and prosperity, Li Shimin was also very diligent. I often read the memorial in the dead of night, and my body for the country and the people is still overwhelmed for a long time. These are all accumulated by myself. When you are young and strong, three meals a day are irregular. I am too old to arrange my time reasonably. People are not made of iron, so naturally I can't carry them.
In addition, there are some personal qualities of Li Shimin, and we all know that there is a gap between people. Li Shimin's fighting capacity is not as good as that of the generals around him. He is over 70 years old, but he has fallen to 5 1 year old. People who also come from the front line are naturally difficult to balance because of their different physical qualities.