Predicting whether dietary restriction would increase longevity in species not tested so far.
Dietary restriction (DR) is often considered as a nearly universal means to extend longevity in animal species. This article argues that whether DR will increase longevity is dependent on life-history strategies. Long-lived species are not expected to live much longer under DR, contrarily to short-lived ones. However, species able to cover long distances are not expected to live longer under DR, even if they are short-lived. Human beings are long-lived and can also cover long distances: thus, DR would probably not increase their lifespan. One may wonder whether DR mimetics would have some effects in human beings if DR does not increase longevity in this species.
Le Bourg
Eric
E
Université Paul-Sabatier, Centre de Recherche sur la Cognition Animale, UMR CNRS 5169, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France. lebourg@cict.fr
D000818:Animals; D031204:Caloric Restriction; D006801:Humans; D008136:Longevity / Q000502:physiology*; D013045:Species Specificity