 He has also served as a referee for over 50 academic journals, and has been a member of the Board of Reviewing Editors of "Science Magazine" since August 1991.Bloom is an Adjunct Trustee of amfAR, The Foundation for AIDS Research and member of the Board of Directors of Population Services International, which addresses HIV/AIDS on a global scale.He additionally serves as a member of the World Economic Forum's Global Health Advisory Board and its Global Agenda Councils on Population Growth and on Ageing.