PMID- 34673082 OWN - NLM STAT- MEDLINE DCOM- 20220316 LR - 20220316 IS - 1872-6216 (Electronic) IS - 0047-6374 (Linking) VI - 200 DP - 2021 Dec TI - Rodent diet aids and the fallacy of caloric restriction. PG - 111584 LID - S0047-6374(21)00156-1 [pii] LID - 10.1016/j.mad.2021.111584 [doi] AB - Understanding the molecular mechanisms of normal aging is a prerequisite to significantly improving human health span. Caloric restriction (CR) can delay aging and has served as a yardstick to evaluate interventions extending life span. However, mice given unlimited access to food suffer severe obesity. Health gains from CR depend on control mice being sufficiently overweight and less obese mouse strains benefit far less from CR. Pharmacologic interventions that increase life span, including resveratrol, rapamycin, nicotinamide mononucleotide and metformin, also reduce body weight. In primates, CR does not delay aging unless the control group is eating enough to suffer from obesity-related disease. Human survival is optimal at a body mass index achievable without CR, and the above interventions are merely diet aids that shouldn't slow aging in healthy weight individuals. CR in humans of optimal weight can safely be declared useless, since there is overwhelming evidence that hunger, underweight and starvation reduce fitness, survival, and quality of life. Against an obese control, CR does, however, truly delay aging through a mechanism laid out in the following tumor suppression theory of aging. CI - Copyright (c) 2021 The Author. Published by Elsevier B.V. All rights reserved. FAU - Wolf, Alexander M AU - Wolf AM AD - Laboratory for Morphological and Biomolecular Imaging, Faculty of Medicine, Nippon Medical School, Japan. Electronic address: alexander.martin.wolf@gmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211018 PL - Ireland TA - Mech Ageing Dev JT - Mechanisms of ageing and development JID - 0347227 RN - 0 (Senotherapeutics) SB - IM MH - Aging/*physiology MH - Animals MH - *Caloric Restriction MH - Energy Intake/physiology MH - Healthy Aging/physiology MH - Humans MH - Longevity/*drug effects MH - Mice MH - *Obesity/diet therapy/drug therapy/metabolism/mortality MH - Senotherapeutics/*pharmacology MH - Survival Analysis OTO - NOTNLM OT - Aging OT - Caloric restriction OT - Caloric restriction mimetics OT - Life span OT - Obesity EDAT- 2021/10/22 06:00 MHDA- 2022/03/17 06:00 CRDT- 2021/10/21 20:49 PHST- 2021/03/09 00:00 [received] PHST- 2021/10/01 00:00 [revised] PHST- 2021/10/05 00:00 [accepted] PHST- 2021/10/22 06:00 [pubmed] PHST- 2022/03/17 06:00 [medline] PHST- 2021/10/21 20:49 [entrez] AID - S0047-6374(21)00156-1 [pii] AID - 10.1016/j.mad.2021.111584 [doi] PST - ppublish SO - Mech Ageing Dev. 2021 Dec;200:111584. doi: 10.1016/j.mad.2021.111584. Epub 2021 Oct 18.