A new study by Consumer Reports claims that eight well-known cancer tests aren't effective for most patients. What does Dr. Oz think? Find out exactly which screenings he thinks you can skip and why more isn't always better.

View Part 2 of Think Twice About These Cancer Tests.

Read more about cancer tests you should think twice about.

Watch Dr. Oz reveal the top three lifesaving cancer tests.

Watch Dr. Oz explain how you can cut your cancer risk in half at home.

Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.