Actually, from the article:
> Experiments showed that not to be the case. Instead, trials with healthy human subjects showed that the difference was due to the amount of gas in a given fecal sample.
> Experiments showed that not to be the case. Instead, trials with healthy human subjects showed that the difference was due to the amount of gas in a given fecal sample.
According to the study, naturally about half of the population of mice produce floaters. When you collect stool samples of that half and inject it on the other half, they also start producing floaters. On the other hand, when you sterelize the gut of the floater group, they start producing feces that sink.
Fat content seems not to be related.