There is a lot of research on the question who takes risks, when and why. However, still some potentially relevant influences receive too little consideration. These include the influence of glucose, especially for people low in self-control. People take risks because they expect a benefit (e. g. the idea of successful betting on horse racing can be very encouraging to take a risk). Research has shown that people with low levels of the personality trait self-control are even more willing to take risks compared to people with higher levels of self-regulation. Next to it, findings from another research field revealed that glucose facilitates reward and goal-directed behavior. Since risky behavior provides an opportunity to obtain some reward we hypothesized that especially people low in self-control show increased risk-taking behavior after consuming glucose. To investigate this assumption we asked 112 participants to take part in a lab study. Results showed that a dose of sugar (compared to placebo) led to more riskiness on behavioral and cognitive level for participants low in self-control, but not for participants with high levels of self-control. These findings contribute to a better understanding of the question who takes risks when and why by illuminating the neglected influence of glucose. Theoretical and practical implications will be discussed.