Right, "There is no causal link between stress and MS." There is a causal relationship between stress and relapse in people with MS (even though it is only a small one.)
Mult Scler. 2006 Aug;12(4):453-64.
Relationship between stress and relapse in multiple sclerosis: Part I. Important features.
Brown RF, Tennant CC, Sharrock M, Hodgkinson S, Dunn SM, Pollard JD.
Department of Psychology, University of New England, Armidale, NSW 2351, Australia. rhonda.