A living will is one form of advance directive, leaving instructions for treatment. Another form is a specific type of power of attorney or health care proxy, in which the person authorizes someone (an agent) to make decisions on their behalf when they are incapacitated.
Antioxidant vitamins A, C and E may improve blood flow by preventing oxidation of cholesterol, one of the main causative factors in arterial plaque formation, according to a study published in the January 2012 issue of the journal Advances in Clinical and Experimental Medicine..
And, vitamin B6 not only helps to stave off arteriosclerosis, but also can enhance the production of red blood cells. B12 can help the body fight off anemia and promotes energy production. But, of all the vitamins for circulation, vitamin B3 might be the most important.