"I underwent a checkup the day before yesterday to take full care of my health. I am returning to work now and I hope to work hard", Abe said while entering the office, as quoted by Kyodo.
Rumours about the 65-year-old politician's condition surfaced after July reports about him vomiting blood. In addition, people close to Abe have said that the prime minister has shown signs of exhaustion after months of steering the nation's coronavirus response.
Abe's aide said that Monday's hospital visit was a regular checkup. During his previous tenure from 2006-2007, Abe had to resign from the office over an intestinal disease.