For decades, depression was explained with a single tidy phrase: a “chemical imbalance” of serotonin. It’s a useful starting point — but it’s incomplete. Modern research shows depression is better understood as a whole‑body condition, shaped by far more than one neurotransmitter. That matters, because it opens up more ways to actually feel better.
Depression is a whole-body state
Low mood rarely travels alone. It often arrives with fatigue, disrupted sleep, appetite changes, brain fog and physical aches. That’s a clue: the systems driving those symptoms — inflammation, stress physiology, metabolism, the gut — are also influencing mood.
- Inflammation. A meaningful share of people with depression show elevated inflammatory markers, and inflammation can directly dampen mood and motivation.
- The gut–brain axis. The gut helps produce and regulate mood-related neurotransmitters; digestive health and mood are genuinely linked (more in our gut–brain article).
- Sleep and stress physiology. Chronic stress and poor sleep keep the body in a state that feeds low mood.
- Nutrient status. Building the neurotransmitters that regulate mood requires specific nutrients; gaps can quietly contribute.
Why this view helps
If depression were only about serotonin, one lever would fix it for everyone. It doesn’t — which is exactly why some people feel stuck on a single approach. A whole‑body view explains those differences and gives more places to intervene: psychotherapy and sleep and nutrition and medical context, working together.
What integrated care looks for
At Sphosh Health, depression care keeps psychotherapy as the foundation and adds an assessment of the physical contributors that may be feeding it. The result is one coordinated plan rather than a single guess. You can read more about depression & low mood or our overall approach.
An honest caveat
A whole‑body model is not a reason to abandon effective treatment, and it is not a promise that nutrition alone resolves depression. It is a more complete map — and a reminder that if you’ve felt stuck, there may be more that can be done.
If you’re struggling, reaching out is a strong first step. If you are in crisis or thinking of harming yourself, call or text 988 (Suicide & Crisis Lifeline) or 911.
Naturopathic physician, licensed mental health counselor, and founder of Sphosh Health. Dr. Tanji specializes in integrative, whole-person psychiatry — combining psychotherapy with medical, nutritional and lifestyle care. Meet the team →