A recent study has found that eating eight walnuts per day decreased the sudden onset of inflammation and oxidation in the arteries— processes contributing to hardening of arteries— and also helped preserve the elasticity and flexibility of the arteries, regardless of cholesterol levels, which enabled the blood vessels to expand when needed to increase the flow of blood.
Additionally, the walnut diet significantly reduced total cholesterol and LDL cholesterol levels.
As I've commented on in other articles, inflammation is implicated in other conditions, such as cancer, diabetes, fibromyalgia, obesity to name a few, as well as in the aging process. A diet high in green vegetables and omega 3 fats (found in walnuts, flax seed, fatty fish) decreases inflammation. Eat more of these foods and less of the inflammatory foods (red meat, sugar, fried foods, processed foods) and literally see your health and your skin improve.
Circulation. 2004 Apr 6;109(13):1609-14. Epub 2004 Mar 22.