Journalist, documentary maker and author Paul Greenberg ate fish every day, three meals a day, for a full year to test the effectiveness of Omega 3 on his own body.

Omega 3 is a fatty acid found in fish that is credited with everything from improving cardiovascular health and improving memory. Millions of people around the world take Omega 3 fish oil supplements.

Greenberg takes a deep dive into the Omega 3 industry and finds out how the thirst for those amber gold capsules of fish oil are affecting the ocean's ecosystem.

His findings are in a book called The Omega Principle: Seafood And The Quest For A Long Life And A Healthier Planet.