Caloric restriction (CR) is the only non-genetic manipulation known to increase longevity and delay age-related diseases in various species, including mammals (see [1] for review).
Interestingly, while a reduction of insulin/IGF-I signaling can result in diabetes, its reduction can also increase longevity and delay the onset of protein-aggregation-mediated toxicity [ 14].
While the importance of individual genetic makeup (intrinsic factors) in longevity and delayed onset of diseases is logical, how the confounding extrinsic factors such as the interactions of oxidative stress and aging process would lead to increased somatic mutations that affect the regulations of biological clocks and functions of organ systems in the direction of diseases are not understood.
In females, mating is costly in terms of reducing longevity and delaying the onset of reproduction.
Mating was costly to females in terms of reducing longevity and delaying the initiation of egg laying, although mating did not affect the survivorship and longevity of males.
However, mating was costly to females in terms of reducing longevity and delaying the initiation of egg laying, although mating did not affect the survivorship and longevity of males.
As seen in Ames dwarfs, Snell dwarf mice are deficient in GH, PRL, and TSH, have increased longevity, and delayed onset of metabolic disorders and cancer as they age.
Mutations in insulin/IGF-1 signaling pathway have been shown to lead to increased longevity in various invertebrate models, although it has to be noted that it was recently shown that the Igf1r mouse is not a model of increased longevity and delayed aging as predicted by invertebrate models with mutations in the insulin/IGF-1 signaling pathway.
There is increasing available evidence that following a Mediterranean style diet correlates to higher longevity and delays the onset of the deterioration in health, not only in countries from the Mediterranean Basin but in other non-Mediterranean countries as well (Kouris-Blazos et al 1999; Havenam-Nies et al 2003).
Our latest study adds one more evidence that inhibition of IGF/PI-3K/mTOR pathway, activation of sirtuin, induction of autophagy, which all associate with increased longevity and the delayed onset of age-related disorders [ 4, 5], promote somatic cell reprogramming [ 6].
As with the p53+/− mice, Rapatar treatment of the p53−/− mice resulted in significant longevity extension and delayed cancer formation relative to untreated p53−/− mice.
