Video: Can chocolate make you smarter? Look closely at the number of Nobel Laureates a country has compared to its annual chocolate consumption and it reveals an intriguing correlation. There are many health boosting qualities attributed to dark chocolate and certainly there are some studies that suggest in older adults chocolate can boost blood flow to the brain and produce some improvements in brain function. This short video nicely summarises whether claims that chocolate can boost our intellect really stands up. It is worth remembering that excessive sugar and fat - the other main constituents of chocolate - can be harmful to our health.