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From this new article from the BBC: "Across mammals alone, expected lifespan can vary 100-fold, from shrews that live for no longer than 1.5 years to the bowhead whales that can live for more than 200. It is as if, for various reasons, natural selection has somehow pushed certain creatures to evolve their own elixir of life." The writer goes on to talk to scientists studying genes and gene expression in whales, bats and naked mole rats, in hopes of discovering how they live so long, and in particular avoid cancer. The article talks about the possibility of using gene therapy to replicate some of the longevity-promoting genetic changes observed in these long-lived animals in people someday. One of the researchers talks about a study I'd sign up for - comparing bowhead whale gene expression to the gene expression of people practicing CR! It reminds me of the study  Luigi Fontana did on our muscle tissue - namely comparing our gene expression to that of CRed rats. Note: This is yet another example of a post that would be fit better on a "Science of Health & Longevity" forum, rather than here on the "CR Science & Theory" forum. How about it Brian/Tim? --Dean ----------------------------  Mercken, E. M., Crosby, S. D., Lamming, D. W., JeBailey, L., Krzysik-Walker, S., Villareal, D. T., Capri, M., Franceschi, C., Zhang, Y., Becker, K., Sabatini, D. M., de Cabo, R. and Fontana, L. (2013), Calorie restriction in humans inhibits the PI3K/AKT pathway and induces a younger transcription profile. Aging Cell, 12: 645–651. doi: 10.1111/acel.12088. Full Text: http://onlinelibrary.wiley.com/doi/10.1111/acel.12088/full