Serotonin is a neurotransmitter in the brain that plays a crucial role in regulating mood, emotions, and overall mental well-being. It cannot steal serotonin from a person. However, when someone experiences a decrease in serotonin levels due to various factors such as stress, inadequate nutrition, or certain medical conditions, it can lead to mood disturbances like depression and anxiety. In such cases, it may feel as though serotonin has been "stolen" because of the resulting emotional and mental challenges. It's essential to prioritize mental health and seek appropriate support and treatment if serotonin levels are imbalanced to regain a sense of emotional balance and well-being.