What is the fine-grained topic of the following text: “We were surprised that the lard and the fish oil diet, despite having the same energy content and the same amount of dietary fiber—which is the primary energy source for the gut bacteria—resulted in fundamentally different gut microbiota communities and that the microbiota per se had such large effects on health,” Robert Caesar of the University of Gothenburg, Sweden, told the medical media. Only return the topic.
The effect of lard and fish oil diets on gut microbiota communities and health.