He is also a member of the board of trustees of Human Frontier Science Program, a member of International Scientific Advisory Board of AD&PD as well as a member of International Scientific Advisory Board of International Conference on Alzheimer's Disease and related disorders.

Suh is a council member of the Federation of Asia-Oceania Neuroscience Societies (FAONS), APRC (Asia-pacific Regional Committee) of IBRO, and Asian Pacific Neurochemistry.

He was the president of Korean Mind, Brain and Education Society, a professor and chairman of the department of pharmacology and college of medicine at Seoul National University, a director of National Creative Research Initiatives Center for Alzheimer's Disease, a director of Neuroscience Res.

Suh also was a member of the Korean National Science and Technology council.

As the president, he demonstrated his ability to promote the foundation of Korea Brain Research Institute.

In addition, from 1997 to 1999, he was the founding president of Korea Brain Association and a dean of the medical college at Kangwon National University.

From 2007 to 2009, he has been the founding president and a council member of The Korean Society for Neurode Generative Disease.

In 2004, Suh won the 5∙16 National Prize and Eui Dang Medical Award.