Pancreatic cancer has a 5-year survival rate of under 10% and is often called the "silent killer." It does not cause symptoms in its early stages and is often not detected until it is advanced. But a group of Japanese doctors has come up with a way to detect it early using an endoscope equipped with ultrasound. The procedure takes just 10 minutes. We also introduce tea and a dish using medicinal herbs to boost immunity to prevent coronavirus infection.