What levels get increased by caffiene intake?

Caffeine intake primarily increases levels of adrenaline (epinephrine), which enhances alertness and energy. It also leads to elevated levels of dopamine, a neurotransmitter associated with pleasure and reward. Additionally, caffeine can increase the release of cortisol, a stress hormone, which can affect metabolism and energy levels. Overall, these changes contribute to the stimulating effects commonly associated with caffeine consumption.