I completely cured my severe anxiety and minor depression by eliminating wheat and sugar from my diet. I come from a family where everyone has digestive issues and some type of illness that is tentatively linked to the microbiome.
Recurrence is about 50% for people with one major depressive disorder occurence, and 80% for people with 2.
That makes it more akin to something like cancer in western countries with regards to lifetime prevalence (but not recurrence)
The "mild or moderate" segment of depression, or anxiety, is what is said to be a more common short-term occurrence amongst all of us. Most of us manage to often deal with this kind of "situational" depression / anxiety due to some stressful event (losing a job, death, breakup etc.), on our own. But long-term and / or severe / extreme depression is what often requires an outside intervention.
And since then I've done a lot of experimenting and reading other peoples thoughts, and reached the conclusion that simple carbohydrates are fucking terrible for you, for multiple reasons. The biggest is that it causes an insulin spike. If you're then physically active, you'll burn off the sugar you just ate, but your insulin levels stay high, so you'll never start burning your body fat. You just get hungry and eat more sugar.
this makes it sound like you have some sort of celiac, gluten allergy, or low-key diabetes