The DASH diet includes whole grain products, fish, poultry and nuts in optimal quantities and limits the use of red meat, added sugar, sweetened beverages and sweets. The diet is high in fiber, potassium, low in sodium, saturated fat and cholesterol. DASH diet which is recommended to prevent hypertension now has its benefits extended in reducing the risk of depression. People who eat vegetables, fruit and whole grains may have lower rates of depression over time, according to a preliminary study.