[Nutrition and mental diseases : Focus depressive disorders]

Area of Science:

• Nutritional Psychiatry
• Psychoneuroimmunology
• Gut-Brain Axis Research

Background:

• Dietary interventions are emerging as adjunctive treatments for mental disorders.
• Pathological mechanisms underlying these effects are not fully elucidated.
• Nutrients and dietary patterns may modulate immune, inflammatory, and neurochemical pathways.

Purpose of the Study:

• To explore the role of dietary interventions in mental health.
• To investigate the influence of nutrients on key biological systems.
• To review evidence for specific dietary patterns and supplements.

Main Methods:

• Review of observational studies on dietary patterns and mental health.
• Analysis of meta-analyses on nutrient supplementation trials for depression.
• Examination of proposed biological mechanisms.

Main Results:

• Traditional diets like the Mediterranean diet show protective effects on mental health.
• Omega-3 fatty acid supplementation yields small to medium significant antidepressant effects.
• Evidence for vitamin D's antidepressive effect remains inconclusive.

Conclusions:

• Dietary interventions represent a potential therapeutic avenue for mental health.
• Specific nutrients, such as omega-3 fatty acids, show efficacy in managing depression.
• Further research is needed to clarify the role of other nutrients like vitamin D.