Marisa Meltzer began her first diet at the age of five. Growing up an indoors-loving child in Northern California, she learned from an early age that weight was the one part of her life she could neither change nor even really understand.

Fast forward nearly four decades. Marisa, also a contributor to the New Yorker and the New York Times, comes across an obituary for Jean Nidetch, the Queens, New York housewife who founded Weight Watchers in 1963. Weaving Jean's incredible story as weight loss maven and pathbreaking entrepreneur with Marisa's own journey through Weight Watchers, she chronicles the deep parallels, and enduring frustrations, in each woman's decades-long efforts to lose weight and keep it off. The result is funny, unexpected, and unforgettable: a testament to how transformation goes far beyond a number on the scale.