There is a lot of research which is aimed at studying the impact of fasting upon the gut microbiome.
One study in mice looked at restructuring the microbiome through fasting in order to understand the relationship between gut health and age-related diseases. https://diabetes.diabetesjournals.org/content/diabetes/67/9/1867.full.pdf
It found that in a mice study “intermittent fasting” led to higher levels of blood hemoglobin.
This study looked at mouse hemoglobin survival levels in non-fasting mice and fasting mice, and observed that intermittent fasting has a clear benefit in reducing inflammation. The study also examined gut bacteria in the mice, looking to understand the impact of intermittent fasting upon the gut microbiota of mice.
The study noted clear differences between the intermittent fasting mice, as well as the non-intermittent fasting mice. Especially for diabetic mice, intermittent fasting practically “restructured” their microbiomes.
Furthermore, the researchers also examined whether or not the intermittent fasting was able to improve the metabolism of the mice. Intermittent fasting created a marked increase in good bacteria. Therefore, intermittent fasting promotes the growth of “good bacteria” and decrease of “bad bacteria.”
There are trillions of bacteria in your body’s intestines. These play a very important role in your health, because they impact how your body is able to digest food.
In mice, the aforementioned results indicate that intermittent fasting is designed to help reset the gut’s microbiome. This promotes a wide range of health benefits for better metabolism, repair of damage in the past, and more.
It’s also important to remember that there are plenty of tests available on the market which are designed to give you a better indication of the health of your gut microbiome.