Olive oil has a healthy fat. It is also rich in antioxidants such as phenols, anthocyanidins and flavonoids. Because of richness of nutrients it decreases the risk of dementia and depression. Various studies have found that olive oil, as part of the Mediterranean diet, has a positive impact on mental health. Scientists from Spain found that aficionados to the Mediterranean diet are thirty percent less likely to develop depression. Researchers from University College, London came to the same exact conclusion. The Mediterranean diet is not just for prevention. An Australian team found that implementing a Mediterranean diet was effective in improving symptoms of depression. Olive oil is delicious in taste and simply be consumed without food by taking one to two tablespoons early in the morning with empty stomach, either to supplement or in place of olive oil in your meals.