After tests at Charing Cross Hospital, Cunningham was diagnosed with suffering from amyotrophic lateral sclerosis (ALS; also known as Lou Gehrig's disease), in June 2002.[4] He immediately retired from professional rugby, and started the Jarrod Cunningham SALSA Foundation in March 2003 with the aim of providing hope, education and inspiration for fellow sufferers of ALS.[5] In November 2004 he was awarded the IRB Spirit of Rugby award in recognition of his work in raising awareness of the disease. He returned home to New Zealand in December 2004. He died at his home on 23 July 2007.[6]