Heymsfield, Steven B. https://orcid.org/0000-0003-1127-9425
Ludwig, David S. https://orcid.org/0000-0003-3307-8544
Wong, Julia M. W.
McCarthy, Cassidy
Heo, Moonseong https://orcid.org/0000-0001-7711-1209
Shepherd, John
Ebbeling, Cara B.
Article History
Received: 25 April 2022
Revised: 17 August 2022
Accepted: 18 August 2022
First Online: 8 September 2022
Competing interests
: Dr. Heymsfield reports his role on the Medical Advisory Boards of Tanita Corporation, Amgen, and Medifast; he is also an Amazon Scholar. DSL received royalties for books that recommend a low-glycemic load diet; his spouse owns a nutrition education and consulting business.
: Protocols for FB4 and (FS)2 were approved by the Institutional Review Board at Boston Children’s Hospital and written informed consent was obtained from all participants.