Dopamine, Love, Learning and Motivation - Desire, Disease and Dopamine DynamicsDopamine can be healthy or destructive, empowering and addictive. Dopamine levels in the brain effect love, learning and motivation. Excessive dopamine can lead to emotional disturbances, poor mental health, and chemical addiction. Not surprisingly, food, alcohol, and nicotine manufacturers use plenty of sugar to appeal to and entice consumers to partake and become addicted to their harmful substances. Temporarily ele