Foods we consume may affect our internal chemistry. Certain foods have vicious effects on the brain—for productivity, mood and mental energy. Too much chocolate may leave you craving for more sugar and an overdose of salty chips dehydrates the body and the brain, bringing on fatigue. High fat meals raise stress hormone levels and keep them high.
Cutting down or avoiding "food stressors" like sugar, caffeine, alcohol and chocolate has the most impact on mental health. Consuming more of "food supporters" like water, vegetables, fruit and oil-rich fish has a positive impact on health.