Fighting Free Radicals: The Enzogenol Story by Kelvin Winston Duncan focuses on the role of oxidative stress—damage caused by free radicals—in aging and disease, and presents antioxidants as a key defense. The book centers on Enzogenol, a pine bark extract, describing its development and proposed health benefits, including supporting cardiovascular health, cognitive function, and immune resilience. Duncan explains the science behind free radicals in accessible terms while promoting antioxidant supplementation as a way to counteract cellular damage. Overall, the book combines general education about oxidative stress with a strong emphasis on Enzogenol as a targeted solution, though its claims are often viewed as promotional and should be considered alongside broader scientific evidence.