Sourdough for mood and hyperglycemia

Not all carbs are equal. Several months ago I made a discovery of gluten-free sourdough recipes and now I eat it almost daily. I obtained a sourdough starter, and now that I have one, it can live on forever, as long as it gets fed. It can definitely outlive me! Feeding the starter is very simple and requires only two ingredients – brown rice flour and warm water. After being on a strict AIP diet for almost a year (a lot of food group exclusions, including grains), it was very exciting to once again eat bread, burritos, and blueberry muffins. I no longer follow the strict AIP diet since it did not turn out to be a magical cure for me. I did improve a bit, but that does not mean that every food group exclusion contributed to my improvement. One person (me) trying the AIP diet is not a clinical trial with test and control groups.

I do see strong correlation between my psychotic episodes and consumption of gluten/cow’s dairy/corn/chocolate/nightshades (bell peppers are fine, small amounts of tomatoes are also OK)/ high-glycemic foods. I haven’t found issues with eating gluten-free whole grains and also found no evidence that grains are inflammatory. I don’t consider any blog post evidence. If a blog post refers to a research paper, then I will consider their claim. I do agree that anecdotal evidence is also useful, it was other people’s stories that helped me to obtain the right diagnosis after being misdiagnosed with schizophrenia by my psychiatrist. Only we can’t know from anecdotes what actually helped, if someone did the AIP diet and they got better – was it because they eliminated all the foods the diet suggests to exclude, or they could have improved just as well if they only avoided refined carbohydrates?

The evidence that I found so far indicated that whole grains are actually anti-inflammatory. For example, whole grain intake was found to be inversely related with inflammatory protein concentrations, while refined grain intake was positively related with the inflammatory markers. “In summary, whole grain intake was inversely related to PAI-1 and CRP plasma concentrations, but these relationships were attenuated by the addition of metabolic variables to the model. Refined grain intake was positively independently related to plasma PAI-1 concentrations.

Whole and Refined Grain Intakes Are Related to Inflammatory Protein Concentrations in Human Plasma

I introduced whole grains after a year of strict AIP diet with no problem. I find that consumption of whole grains puts me in a more relaxed state of mind, I actually consume half a cup of rolled oats with green banana flour in the evening for better sleep. Sourdough is great because the baked goods end up with a low glycemic index after the fermentation process. I have a glucometer that I use to determine my blood glucose response to different food products. The standard test is a two-hour glucose test. Two slices of gluten-free bread increased my blood sugar to over 11 mmol/L two hours after consumption, which is a sign of high blood sugar. I did the same test with sourdough bread and sourdough muffins and my blood sugar was back to under 6 mmol/L two hours after consumption, which is a big difference. Short grain brown rice is also a high glycemic index food, while long grain brown rice was found to have lower glycemic index.

Sourdough allows me to eat the foods that I missed out on for so long, at the same time it does not cause a blood glucose spike for me. I have used sourdough to make pizza crust, tortillas, bread, and muffins. Currently I am learning to use fermented batter to cook dosas, an Indian dish. Controlling blood sugar for me means also stabilizing my mood. A glucose spike and then crash turns me lethargic and weepy, it takes away my energy, I definitely want to avoid that. Sourdough allows me to have blueberry muffins for breakfast, goat cheese toast, burritos – all without the consequences of an emotional roller coaster. High glycemic foods may also promote inflammation and given my diagnosis of autoimmune encephalitis, that is something that I definitely want to avoid as well.

Hyperglycemia can cause inflammation through varying mechanisms that result in the production of free radicals and pro-inflammatory cytokines (19, 24). Thus, high glycemic index and glycemic load diets may stimulate inflammation. Glycemic index is the blood glucose-raising potential of the carbohydrates in different foods. A more accurate indicator of the relative glycemic response to dietary carbohydrates, however, is glycemic load. Glycemic load incorporates the relative quality of carbohydrates characterized by the glycemic index. Consumption of high-glycemic index foods results in higher and more rapid increases in blood glucose levels than the consumption of low-glycemic index foods. Rapid increases in blood glucose are potent signals to the β-cells of the pancreas to increase insulin secretion, which can cause a sharp decrease in glucose levels and lead to hypoglycemia (25). In contrast, the consumption of low-glycemic index foods results in lower but more sustained increases in blood glucose and lower insulin demands on pancreatic β-cells (26).

Dietary carbohydrates and inflammation