For people suffering from obesity, weight loss relying solely on diet and exercise can be very difficult to achieve and even more challenging to maintain. Supporting strategies, such as maintaining a healthy gut with probiotics, prebiotics, and fermented foods, can be important tools for effectively treating obesity in some individuals.
The two types of bacteria that have gained the most attention and research related to obesity are Bacteroidetes and Firmicutes. The majority of studies have shown that the more Bacteroidetes you have compared to Firmicutes, the leaner you will likely be. These bacteria may account for the fact that some people stay lean despite whatever they eat and however little they exercise, while others appear to put on weight or are unable to lose it despite strict dieting and exercise regimes.