Sad smiley faces on a scale.

The video opens with a close-up of a bathroom scale, showing sad smiley faces on its display. The scale then transitions to show happier faces. Next, an illustration of the human intestines appears, followed by a magnified view of bacteria within the intestines. A graphic of a single person appears, then a group of five people. An arrow points from the group to a smartphone screen showing someone adding capsules to a small container. Finally, a selection of probiotic supplement bottles and boxes are displayed.