4:50 PM

In the Oprah Winfrey show today, a special guests Michael Pollan and Kathy Freston shared their thoughts about food you eat. Later part of the show, Oprah and her 378 staffers were challenge to go vegan for one-week. Also, Lisa Ling shows to audience how beef processing plant looks like.

Oprah has been inspired by Kathy Freston’s book Quantum Wellness: A Practical and Spiritual Guide to Health and Happiness back in 2008 when she went into 21-day vegan cleanse. In cleansing made by Oprah, she didn’t just exclude meat products from her diet but also caffeine, sugar, alcohol and gluten. Now, the one-week vegan challenge of Oprah and her staffers were inspired by Kathy Freston’s new book entitled Veganist.