Uploaded March 2023 | Updated September 2026, 1 week ago
There’s a phrase that get’s thrown around a lot these days, particularly in the longevity space. And that phrase is Sheekey Science. But there’s another word you may also hear about and that is epigenetic reprogramming. I am guilty myself of throwing this word around without really explaining what i mean by this. I’ve discussed reprogramming before, but i want to discuss in this video what is really meant by the phrase epigenetics, as And it goes beyond me, do you really know what they means by that term. Well, by the end of this video, you will have my interpretation of the term which has come from the science literature that i;ve read, and for fun, i’ll throw in other scientists definitions too.
In particular i will focus mainly on the link between epigenetics, gene expression and cell identity - what makes a happy healthy cell do what it does best. And i think by the end of it you will have 3 main take homes;
(i) an appreciation of genome organisation & cell identity - with some shocking surprises
(ii) an overview of the different classes of epigenetics
(iii) modern day & epigenetic reprogramming
TIMESTAMPS:
Intro - 00:00
DNA packing & chromatin organisation - 01:05
Histone marks - 05:15
DNA methylation - 06:20
RNA - 07:57
Epigenetic reprogramming - 09:45
References:
asheekeyscienceblogcom.wordpress.com/2017/09/13/time-to-re-write-the-textbooks-how-dna-is-really-packed-inside-the-nucleus
Holoch, D., Moazed, D. RNA-mediated epigenetic regulation of gene expression. Nat Rev Genet 16, 71–84 (2015). doi.org/10.1038/nrg3863
Find me on Twitter - twitter.com/EleanorSheekey
Support the channel
through PayPal - paypal.me/sheekeyscience?country.x=GB&locale.x=en_GB
through Patreon - patreon.com/TheSheekeyScienceShow
Please note that The Sheekey Science Show is distinct from Eleanor Sheekey's teaching and research roles at the University of Cambridge. The information provided in this show is not medical advice, nor should it be taken or applied as a replacement for medical advice. The Sheekey Science Show and guests assume no liability for the application of the information discussed.
Icons in intro; "freepik.com/free-photos-vectors/background"Background vector created by freepik - freepik.com
There’s a phrase that get’s thrown around a lot these days, particularly in the longevity space. And that phrase is Sheekey Science. But there’s another word you may also hear about and that is epigenetic reprogramming. I am guilty myself of throwing this word around without really explaining what i mean by this. I’ve discussed reprogramming before, but i want to discuss in this video what is really meant by the phrase epigenetics, as And it goes beyond me, do you really know what they means by that term. Well, by the end of this video, you will have my interpretation of the term which has come from the science literature that i;ve read, and for fun, i’ll throw in other scientists definitions too.
In particular i will focus mainly on the link between epigenetics, gene expression and cell identity - what makes a happy healthy cell do what it does best. And i think by the end of it you will have 3 main take homes;
(i) an appreciation of genome organisation & cell identity - with some shocking surprises
(ii) an overview of the different classes of epigenetics
(iii) modern day & epigenetic reprogramming
TIMESTAMPS:
Intro - 00:00
DNA packing & chromatin organisation - 01:05
Histone marks - 05:15
DNA methylation - 06:20
RNA - 07:57
Epigenetic reprogramming - 09:45
References:
asheekeyscienceblogcom.wordpress.com/2017/09/13/time-to-re-write-the-textbooks-how-dna-is-really-packed-inside-the-nucleus
Holoch, D., Moazed, D. RNA-mediated epigenetic regulation of gene expression. Nat Rev Genet 16, 71–84 (2015). doi.org/10.1038/nrg3863
Find me on Twitter - twitter.com/EleanorSheekey
Support the channel
through PayPal - paypal.me/sheekeyscience?country.x=GB&locale.x=en_GB
through Patreon - patreon.com/TheSheekeyScienceShow
Please note that The Sheekey Science Show is distinct from Eleanor Sheekey's teaching and research roles at the University of Cambridge. The information provided in this show is not medical advice, nor should it be taken or applied as a replacement for medical advice. The Sheekey Science Show and guests assume no liability for the application of the information discussed.
Icons in intro; "freepik.com/free-photos-vectors/background"Background vector created by freepik - freepik.com
![The potential of fasting to delay aging (Periodic vs. intermittent)
In this video I discuss different types of fasting diets (both periodic and intermittent) and the underlying molecular mechanisms and why they have potential to delay aging and aging-related diseases. In particular we will address the importance of refeeding, which is more intense in periodic fasting (and fast mimicking diets [FMD]) due to the more severe fasting length, and activation of stem cells for regeneration & rejuvenation of tissues. We will also discuss the pros and concerns for fasting and how fasting overlaps or doesnt overlap with anti-aging supplements.
*Get 10% off at DoNotAge using my discount code SHEEKEY*
http://bit.ly/DoNotAgeProducts
DoNotAge are supporting my channel in the education of longevity and aging research. They also sell a variety of supplements including NMN, resveratrol, fisetin and more! :)
Disclaimer - using this discount will provide the channel with a small commission, so only use if you want to support the channel! :)
*The patreon is launched* If you want to support the channel/get extra access to video drawing maps and behind the scenes updates check it out.
https://www.patreon.com/TheSheekeyScienceShow
TIMESTAMPS;
Intro - 0:00
Fasting diets - 01:10
Fasting mechanisms - 03:10
Longevity signalling - 04:30
Intermittent fasting pros & cons - 06:55
Periodic fasting - 10:15
Refeeding importance - 11:50
Supplements & fasting - 13:30
Which is better IF vs. PF? - 14:40
Other questions - 15:25
References;
Longo, V.D., Di Tano, M., Mattson, M.P. et al. Intermittent and periodic fasting, longevity and disease. Nat Aging 1, 47–59 (2021). https://doi.org/10.1038/s43587-020-00013-3
Panda & Longo review article - https://doi.org/10.1016/j.cmet.2016.06.001
TRF study - https://doi.org/10.1016/j.cmet.2012.04.019
FMD study - https://doi.org/10.1016/j.cmet.2015.05.012
Icons in intro; https://www.freepik.com/free-photos-vectors/backgroundBackground vector created by freepik - www.freepik.com The potential of fasting to delay aging (Periodic vs. intermittent)](https://i.ytimg.com/vi/y4CRQTpDJI0/mqdefault.jpg)





