I wish the field of psychiatry was mature and used different words for depression caused by your environment and life stressors vs depression caused by brain chemistry vs depression caused by ignoring nutrition. It's not fair to compare these types of depression as worse or less worse and each would need different kinds of treatment protocols. The current definition is just based on symptoms and trying therapy and medication until something works.
There is a lot of promising research being done about the relationship between your gut microbiome and depression and other mental health issues.
Hopefully more research is done in populations across the world because it seems like currently most of the literature is focused on a western population.
"High-fat consumption not only leads to obesity but also causes widespread inflammation of body systems. The gut microbiome may alter the harmful effects of the high-fat diet, improving mood and behavior. By modulating gut microbiome composition through proper nutrition and probiotics, we also help decrease anxiety and depression [4]." [0]
There is a lot of promising research being done about the relationship between your gut microbiome and depression and other mental health issues.
Hopefully more research is done in populations across the world because it seems like currently most of the literature is focused on a western population.
"High-fat consumption not only leads to obesity but also causes widespread inflammation of body systems. The gut microbiome may alter the harmful effects of the high-fat diet, improving mood and behavior. By modulating gut microbiome composition through proper nutrition and probiotics, we also help decrease anxiety and depression [4]." [0]
[0] (2020) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7510518/
[4] (2018) https://www.sciencedirect.com/science/article/pii/S088915911...