Yes. A naturopath can help with depression by addressing the root causes of the depression, such as nutritional deficiencies, food allergies or sensitivities, hormonal imbalances, and stress.
A naturopath will also recommend specific supplements and dietary changes to help improve mood and ease symptoms of depression. Some of the most common supplements for depression include omega-3 fatty acids, probiotics, B vitamins (especially folate and B12), magnesium, etc.