Our bodies are truly amazing. Science has been discovering so many wondrous details about the workings of hormones, cells, genes and emotions. Some research explains that emotions are generated and controlled by different chemicals in the brain, but there is no one "love" or "hate" chemical. At any given moment, dozens of chemical messengers, or neurotransmitters, are active. Emotions are created in the moment. The terms feelings and emotions are often used interchangeably.