This document summarizes vitamins E and K. Vitamin E is an antioxidant that helps keep the immune system strong, aids blood circulation, and maintains healthy skin. Key food sources include nuts, seeds, fruits and vegetables. Vitamin K is essential for blood clotting and bone health. It helps the body use calcium to build bone. Good dietary sources are dark green leafy vegetables and some fermented foods. Both vitamins play important roles in cardiovascular health and reducing disease risk.