Many studies stress the importance of maintaining a healthy microbiome in order to boost your thyroid. The microbiome refers to the population of bacteria in our bodies that mainly live in our digestive tract. These bacteria are crucial when it comes to maintaining the intestinal barrier and keeping our immune systems strong. When our microbiome is off-kilter, the intestinal wall is more likely to become leaky, and this can lead to inflammation and a cycle of immune activation that can greatly suppress our thyroid. Fermented foods such as sauerkraut, kombucha, miso, etc. can greatly aid our microbiome. Some other theories involving boosting our thyroids include minimalizing stress, getting plenty of sleep, eating a healthy balanced diet, and getting adequate vitamin D.