Naomi Moriyama is a Manhattan mum and author of Japanese Women Don't Get Old or Fat: Secrets of My Mother's Tokyo Kitchen (translated into 19 languages) and The Japan Diet. Naomi has served as Chief Marketing Consultant for Ralph Lauren Japan, as Director of Marketing at HBO in New York and as Account Executive at Grey Advertising in Tokyo and New York. She grew up in Tokyo but now lives in New York City with her seven-year-old son and her husband and co-author, William Doyle.William Doyle is an award-winning, New York Times bestselling author. He has authored or co-authored 14 books and served as director of original programming for HBO as well as a producer. He has been selected a Fulbright Scholar for 2015-16.

This is a great set of principles that are solidly based and yet simple.