David "Avocado" Wolfe is considered by peers to be one of the world's leading authorities on nutrition. He is the author of Amazing Grace, Naked Chocolate, Eating For Beauty and The Sunfood Diet Success System.

David works, in conjunction with www.sunfood.com, to develop, market and distribute some of the world's most wonderful and exotic organic food items and was the first to bring raw and organic: cacao beans/nibs (raw chocolate), goji berries, Incan berries, cacao butter, cacao powder, powdered encapsulated mangosteen, maca extract and cold-pressed coconut oil into general distribution in North America. Since 1995, David Wolfe has given over 1,000 health lectures and seminars in the United States, Canada, Europe, the South Pacific, Central America and South America.

He hosts at least six health, fitness and adventure retreats each year at various retreat centers around the world. 

In 1948, Kordich contracted bladder cancer at twenty-five. A football star at University of Southern California, Kordich travelled across the United States to New York City to be treated by Dr. Max Gerson, who prescribed an all-juice diet. As a result, Jay’s life took a drastic turn for the better within only three months.

In 1989, he started his national television career, making appearances with his juicer, and by the end of 1990, Jay Kordich and juicing were widely known. His infomercials aired for over thirteen years. He used the "Juiceman" name for his own line of juicers, which were made available to consumers through infomercials, catalogs, and retail in the 1980s and 1990s. His first book, #1 New York Times Best Seller The Juiceman's Power of Juicing, made publishing history in 1992, selling over 500,000 copies before they were even printed! Ultimately the book sold over three million copies! His second book, this time co-written with his wife, Linda Kordich, is entitled Live Foods Live Bodies.