Healthcare has long been on a quest for a 'magic bullet' to cure the dreaded disease cancer. As this book shows, nanoparticles perfectly fit the bill with their promising characteristics. Meticulously engineered nanostructures, with a useful drug or molecule, target a specific cancer in unique ways. However, as with many targeted systems, the effectiveness of the system needs to be weighed against the adverse effects. The toxicity of nanoparticles has been a worldwide concern, and evidence-based medicine analyses nanostructures for proof of safety and their efficacy in killing cancer cells. This book gives a fresh perspective on a wealth of diverse nanotechnological advances for various cancers.