In this research, Enterobacter Cloacae represented 35% of the gut bacteria in a morbidly obese volunteer, a severe imbalance. This specific bacteria was transplanted into germ-free mice and compared to a control. After 4 months, the group with the transplanted bacteria was 28% heavier even though they were fed the same diet.
In human terms, thats like the healthy group averaging 160 lbs while the e-cloacae group would be 46 lbs heavier. The image above gives you a sense of what that difference might look like.
Phage Aid targets the specific bacteria in this experiment, Enterobacter Cloacae.