In Brief
Sugar is everywhere and can be difficult to avoid, especially since eating sugary treats activates your brain's reward center. Learn more from this TED-Ed lesson.

When you eat something loaded with sugar, your taste buds, gut, and brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine — an overload of sugar spikes dopamine levels and leaves you craving more. In a TED-Ed lesson, Nicole Avena explains why sweets and treats should be enjoyed in moderation.