My notion is that the initiating damage to the endothelial layer of the
vascular wall, in many cases of vascular disease, is the result of antibody
action against the body's own tissues. I suspect a dynamic of molecular
mimicry underlies this autoimmune attack. This is a situation where
macromolecules of partly digested food are absorbed into the blood through
a damaged intestinal wall. The presence of these macromolecules incites
antibody production and attack. This perspective requires sequence homology
between the food particles and the endothelial tissue (one or more
sequences of amino acids  in the food particles are very similar to the
endothelial tissue)  

It is my belief that a gluten-free, dairy-free diet is likely to have a
beneficial effect, as gluten and dairy are the most common dietary antigens.