Artist and peace activist Yoko Ono has encouraged her nearly five million Twitter followers to read top plant-based physician Dr. Greger's bestselling book How Not To Die.
Taking to social media, John Lennon's widow, 84, writes: "Read Michael Greger's book How Not to Die - look after yourself better by wisely choosing better things to eat."
Ono, who is a known vegetarian, may now be following a plant-based diet after reading Dr. Greger's book.
In response to Ono's tweet, user @mrsplantintexas commented: "So thankful that you posted this. Dr. @nutrition_facts is an amazing human, and he is saving MANY lives daily!"
@ArtsCool added: "I have this book. Very helpful!"
"Great book!" replied @howmuchsomuch.