<div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small;color:#000000">Here is a long article on rapamycin by an M.D.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small;color:#000000"><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small;color:#000000"><a href="https://rapamycintherapy.com/">https://rapamycintherapy.com/</a><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Sep 8, 2019 at 10:22 AM Dave Sill via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>This is long but has lots of details missing from the popular press coverage. I'm just including the intro because the article has graphics and links and because of copyright law.</div><div><br></div><a href="https://joshmitteldorf.scienceblog.com/2019/09/07/1st-age-reversal-results-is-it-hgh-or-something-else/" target="_blank">https://joshmitteldorf.scienceblog.com/2019/09/07/1st-age-reversal-results-is-it-hgh-or-something-else/</a><div><br></div><div><i>Yesterday, the TRIIM study was described in science news headlines around the world, though, through a glitch, the original research paper is not yet on the Aging Cell web site. (You saw it first here.) I refer you to the writeup in Nature’s News section for a full summary of the paper, and in this column I will add my personal framing, and what I know about the study from private connection to its authors and one of the subjects. The big news is setback of the epigenetic clock, by several methylation measures. Instead of getting a year older during the trial, nine subjects got a year younger, on average, based on the version of the Horvath methylation clock that best predicts lifespan. The study had been originally designed to regrow the thymus. (Loss of thymus function has been linked to the collapse of the immune system that occurs typically before age 70.) Imaging showed that the functional part of the thymus expanded over the course of the trial, and blood tests confirmed improved immune function. The treatment included <br><br>human growth hormone (HGH)<br>Metformin<br>Vitamin D<br>Zinc<br>DHEA<br>It is my belief that the age of our bodies is controlled by several biological clocks. (Greg Fahy, who conceived and conducted the TRIIM study, shares this perspective.) Candidates for clocks include <br><br>Thymic involution<br>Methylation profile<br>Timekeeper in the hypothalamus<br>Telomere length<br>Perhaps some changing homeostatic state of signal molecules and transcription factors circulating in the blood<br>This story is about #1 and #2. To be explicit, I’m saying that the body doesn’t wear out with age, but rather aging is a continuation of the timed growth and development program into a phase of late-life self-destruction. Just as growth and development are under epigenetic control. <br></i><br></div></div>
_______________________________________________<br>
extropy-chat mailing list<br>
<a href="mailto:extropy-chat@lists.extropy.org" target="_blank">extropy-chat@lists.extropy.org</a><br>
<a href="http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat" rel="noreferrer" target="_blank">http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat</a><br>
</blockquote></div>