What is the common cause for most diseases?

A: the changes in the elasticity of blood vessels wall is the common reason for all diseases in tissues with blood vessel inside. Once the elasticity of blood vessel wall changed to abnomal level (abnormal frequency, waves and strenths), the transportation of blood  to cells will be interfered and nutrients supply to cells and metabolic wastes elimination from cells will be abnormal,thus will lead to all kinds of organnic diseases covering blodd vessle tumors, eduma, organ shrinks, infaction, paralysis, cancers, etc.