Story: Learn the dangers of coronavirus to our children. Learn how the pandemic has affected our mental health. Learn ways to overcome loneliness and social isolation. Humans have neurotransmitters that regulate many functions in our brain and body. Serotonin is often referred to as the happy chemical because it helps regulate mood. However, social isolation and loneliness can affect serotonin levels, impair immune functions, and can boost inflammation which can lead to Arthritis, type II diabetes, and heart disease.