The International Council of Science (ICSU) is an organization of international scientific unions (e.g., IUPS) and national scientific bodies (e.g., the National Academy of Science in the USA). The unions fall into four clusters, one of which is the Bio-Unions. Since 2010, the Bio-Unions have been meeting among themselves to plan interdisciplinary activities, including (1) a presence at each other's congresses, (2) the joint sponsorship of meetings, and (3) joint sponsorship of teaching activities.In 2012, IUPS co-sponsored a symposium on obesity at the IUFoST Congress. Following the 2013 IUPS Congress, IUPS and five other Bio-Unions sponsored a meeting on Multi-Scale Systems Biology in Chicheley, UK.

The 11 Bio-Unions are:

IBRO (International Brain Research Organization)

     Pierre Magistretti
     Brain Mind Institute 
     Lausanne, Switzerland

IUBMB (International Union of Biochemistry and Molecular Biology)

     Michael Walsh 
     Secretary General
     University of Calgary
     Calgary, Canada
     Phone: 403 220 3021  

IUBS (International Union of Biological Sciences)   

     Nils Chr. Stenseth 
     University of Oslo
     Oslo, Norway
     Phone: 47 2 285 4400 

IUFoST (International Union of Food Science and Technology)

     Rickey Yada
     PO Box 61021, Ste 19,
     511 Maple Grove Drive, Oakville, Ontario
     Canada L6J 6X0
IUIS (International Union of Immunological Societies) 
     Jorge Kalil
     Instituto do Coracao HC-FMUSP
     Av Eneas de Carvalho Aduiar 44 Predio2
     05403-000 Sao Paulo
IUMS (International Union of Microbiological Societies)   
     Yuan Kun Lee
     Department of Microbiology
     Yong Loo Lin School of Medicine
     National University of Singapore
     5 Science Drive 2, Singapore 117597
IUNS (International Union of Nutritional Sciences)
     Anna Lartey
     University of Ghana
     Ghana, West Africa

IUPAB (International Union for Pure and Applied Biophysics)

     Zi-He Rao
     Laboratory of Structural Biology, Room 201-214
     Life Science Building, Tsinghua University
     Beijing 100084, China

IUPESM (International Union for Physical and Engineering Sciences in Medicine)

     Herb Voigt
     Boston University
     Boston, MA
     Phone: 617 353 2817

IUPHAR (International Union of Basic and Clinical Pharmacology)

     S.J. Enna
     University of Kansas Medical Center
     Kansas City, Kansas
     Phone: 913 588 7533

IUPS (International Union of Physiological Sciences) 

     Walter Boron 
     Secretary General
     Case Western Reserve University
     Cleveland, OH
     Phone: 216 368 5298