mental health status of individuals can influence the immune reaction after receiving a vaccine. The article was written by Janice Kielcolt-Glasser, lead author of the research, in company with Annelise Madison, Rosie Shrout and Megan Renna. Kielcolt is the director of the Institute for Research in Behavioral Medicine at the Ohio State University School of Medicine. The group collect and analyze studies from the past 30 years that have documented the impact of behavioral and psychological factors on the immune system . Furthermore, these studies have shown that poor mental health can prolong and worsen the side effects of vaccines . Although the study took into account a wide variety of vaccines,