First, the side effects of the demon fruit
White beard and Karp were great figures in the same period. Old white beard is in poor health. He wore it when he was young. Some people think that white beard can pick two naval generals alone when he is young, which also shows that white beard is young and disease-free and has unparalleled strength. White beard's illness was caused by taking too much devil's fruit when he was young. And the marshal of the Warring States period, with a white beard and a go-kart. During the Warring States Period, when he served as Admiral of the fleet, he had to dye his hair frequently in order to keep his image. Two years later, during the Warring States period, white hair turned white almost overnight. Many people think that this is caused by excessive consumption of production capacity during the Warring States period.
Second, White Beard likes to drink.
White beard likes drinking. Among the Four Emperors, White Beard must often drink. Drinking too much wine is absolutely harmful to his health. Solo is also an alcoholic, and he can't live without alcohol. White beard is not healthy because he likes drinking, but without the maintenance of alcohol, the pain of white beard will be more serious, so owning this thing is not only his spiritual dependence, but also the root cause of his whole body illness. Third, summary.
Generally speaking, White Beard's illness is caused by his personal living habits, and he ate a lot of devil's fruit in order to gain more abilities when he was young. Although the devil's fruit can increase his skills, the side effects of this devil's fruit are unimaginable. In addition, white beard likes to drink on weekdays, so he always hangs a small image all over his body in this cartoon, which also causes him to be sick all over.