A book explaining a diet that promotes gut health and prevents aging. - Title: The Gut Rejuvenates! - Author: Tsuneo Matsuo - Publisher: Sakura-sha - Price: 1400 yen (excluding tax) - ISBN: 978-4-86581-186-5 Thank you for viewing. I purchased this new and have not read it. Also, I have stored it in a place away from direct sunlight, but it has not been stored with extreme care. Please consider this when making your purchase.