Renato Gama explains why people crave chocolate after lunch

Neurologist Renato Gama, a professor at Afya Educação Médica in Rio de Janeiro, says that the desire for chocolate after a midday meal is driven by the brain's reward system. Compounds in cocoa such as theobromine, when combined with sugar and fat, stimulate the release of dopamine and serotonin, producing feelings of pleasure and comfort. In stressful situations, elevated cortisol levels intensify the search for highly palatable foods as a quick reward. The effect includes a brief boost of energy, but it does not translate into lasting physical or cognitive performance.

The explanation draws on research compiled by National Geographic Brazil in 2025, which references studies published in Science and analyses from the National Institutes of Health. These findings highlight the temporary nature of the dopamine surge and the role of cocoa flavonoids in well‑being, while noting that the craving is more about emotional reward than hunger.