Dragon Fruit is pretty high in fiber content so since dragon fruit has lots of fiber it can make you poop if you eat enough of the dragon fruit.
Dragon Fruit is also very healthy for you and contains high potassium too which is also healthy for you.
Eating too many dragon fruits can also cause your urine and poop to turn red which is very normal and nothing to be worried about.
Sometimes when I eat dragon fruit my urine and poop does turn red so just a warning about that if you've never eaten dragon fruit.
It takes me at least 3 dragon fruits to really get my bowels moving but sometimes even one dragon fruit may make you poop because it's high in fiber.