Patty Davis was the daughter of US President Ronald Reagan and his second wife Nancy Reagan. She became an actress like her father, but adopted her mother's name to make her mark. At a young age, she fell into bad company and got addicted to drugs. That's why her parents started an anti-drug campaign called "Just Say No".Gradually, Patty gave up her bad habits and started living a better life. She made a career in writing and wrote several books. She started working to spread awareness against nuclear weapons and Alzheimer's disease.