Powerful ideas from top nonfiction
Try Blinkist to get the key ideas from 7,000+ bestselling nonfiction titles and podcasts. Listen or read in just 15 minutes.
Start your free trial
Blink 3 of 8 - The 5 AM Club
by Robin Sharma
Listen to the Intro
The Epigenetics Revolution summary
Nessa Carey
How Modern Biology is Rewriting Our Understanding of Genetics, Disease, and Inheritance
24 mins
Brief summary
The Epigenetics Revolution by Nessa Carey offers an accessible and informative introduction to the field of epigenetics, the study of genetic changes that occur outside of DNA. It explores how epigenetics is impacting our understanding of health, disease, aging, and evolution.
Table of Contents
The Epigenetics Revolution
Summary of 4 key ideas
Audio & text in the Blinkist app
Key idea 1 of 4
Epigenetics explains what standard genetics can’t.
Mapping the human genome was a gargantuan task. Identifying and analyzing all of the genes that make up a human being is no small feat, even for a team of dedicated experts – so it's no surprise that the project’s completion led to wild fanfare and public enthusiasm.
Bill Clinton, who was president when the genome was first fully sequenced, went on record to say, “Today we are learning the language in which God created life.” The UK Science Minister, Lord Sainsbury, declared, “We now have the possibility of achieving all we ever hoped for from medicine.” Big statements, from powerful men – but in hindsight, were they all that accurate? Well, perhaps not entirely.
Part of the problem was that we overestimated the importance of DNA. We thought of it as a huge set of strict biological instructions, like a mold for making identical parts in a factory. But as it turns out, the reality is really quite different.
You see, we might be better off thinking of human DNA as a script rather than a mold. Let’s consider an actual theater script for a minute. Take Shakespeare’s Romeo and Juliet, for example – although every production takes Shakespeare’s words and stage directions as their starting point, each performance ends up different, because the script can be interpreted in so many different ways.
During rehearsals, the director and actors will scribble their own notes and instructions in the margins of their starting scripts – and in doing so, they turn the initial work into something new and idiosyncratic.
So, what does that have to do with biology? Well, if we think of living things as theatrical productions, then DNA is the first script we’re given to work with – our original masterpiece. Add in those all-important jottings in the margins that make each script unique? Well, that’s epigenetics.
Epigenetics controls the expression of our genes – directing the extent to which any one gene carries out its function. Epigenetic modifications are like the actor’s little notes saying, “Speak these words quietly,” or “Shout this bit,” or even “Skip this line entirely.”
In other words, they’re the unique instructions that tell the individual cells that make up your body how to behave in different circumstances. Epigenetic information is what stops a skin cell from turning into a neuron, or a liver cell from turning into skeletal muscle.
Just as Shakespeare’s play can give rise to both traditional performances in Renaissance style, and modern interpretations like Baz Luhrmann’s 1996 film, so too can a single “script” of DNA give rise to very different characteristics.
To understand this a bit more, let’s forget about Romeo and Juliet for a minute, and focus on a less appealing topic: mice – inbred lab mice, to be exact.
Now, these mice aren’t inbred through any fault of their own. Their human handlers have bred them selectively with their siblings generation after generation, to the point that they have become genetically identical. And yet, despite each mouse seeming identical to its siblings at birth, as the mice babies grow, they begin to show their differences – in things like their body weight and temperament, for example. And this is despite being kept in exactly the same environment.
This difference between genetic makeup, known as genotype, and real-life traits like weight gain, known as phenotype, is often explained by epigenetics. So let’s slow things down a minute and take a look at what that actually means for our mice.
In terms of mechanics, the expression of their genes is modified in two main ways.
The first is through what’s called DNA methylation. That’s when a chemical tag called a methyl group is added to DNA. Most of the time, this specific process results in genes being switched off.
The second type of epigenetic modification involves changes to histones, a type of protein that structures DNA in the nucleus. Changes to histone proteins can be more varied: instead of just turning a gene off, they can act like a dimmer switch, strengthening or weakening the expression of a gene in the same way you’d turn your house lights up or down.
For our young mice, where we see differences in weight, it’s thought this is caused by both DNA methylation and histone modifications. And it’s likely that these epigenetic differences are established very early on – maybe even in the womb.
If we return to our Shakespearean analogy, we can look at DNA methylation and histone modifications as a kind of shorthand that actors use to alter their scripts. DNA methylation says, “Omit this,” while histone modifications tell an actor how loudly and intensely they should deliver certain lines.
Now that we know what epigenetics is, and how it works, let’s look at some of its ramifications for humans. After all, it’s not just inbred mice that are affected!
Want to see all full key ideas from The Epigenetics Revolution?
Key ideas in The Epigenetics Revolution
More knowledge in less time
Read or listen
Get the key ideas from nonfiction bestsellers in minutes, not hours.
Find your next read
Get book lists curated by experts and personalized recommendations.
Shortcasts New
We’ve teamed up with podcast creators to bring you key insights from podcasts.
What is The Epigenetics Revolution about?
The Epigenetics Revolution (2011) is an overview of the cutting-edge field of epigenetics – looking at the various factors that interact with your genes and modify the way they behave in order to make you, you. From mental health to obesity, it examines the fascinating and often unexpected ways that epigenetics can influence our lives and health.
The Epigenetics Revolution Review
The Epigenetics Revolution (2011) is a captivating exploration of the groundbreaking science of epigenetics and its implications for our understanding of genetics and inherited traits. Here's why this book is a must-read:
- With clear explanations and fascinating case studies, it unveils the complex mechanisms of gene expression and their role in shaping our lives.
- By examining how our environment and experiences can influence our genes, Nessa Carey challenges traditional notions of genetics, offering an eye-opening perspective.
- By revealing the potential of epigenetics to impact our health, behaviors, and even our descendants, the book transforms our understanding of inherited traits, making it a thought-provoking and thought-changing read.
Who should read The Epigenetics Revolution?
- Science enthusiasts interested in biology’s new frontiers
- Dinner-party sages looking to wow friends with fascinating scientific wisdom
- Amateur psychologists open to an epigenetic interpretation of trauma
Categories with The Epigenetics Revolution
Book summaries like The Epigenetics Revolution
People ❤️ Blinkist
Sven O.
It's highly addictive to get core insights on personally relevant topics without repetition or triviality. Added to that the apps ability to suggest kindred interests opens up a foundation of knowledge.
Thi Viet Quynh N.
Great app. Good selection of book summaries you can read or listen to while commuting. Instead of scrolling through your social media news feed, this is a much better way to spend your spare time in my opinion.
Jonathan A.
Life changing. The concept of being able to grasp a book's main point in such a short time truly opens multiple opportunities to grow every area of your life at a faster rate.
Renee D.
Great app. Addicting. Perfect for wait times, morning coffee, evening before bed. Extremely well written, thorough, easy to use.
People also liked these summaries
4.7 Stars
Average ratings on iOS and Google Play
31 Million
Downloads on all platforms
10+ years
Experience igniting personal growth
The Epigenetics Revolution FAQs
What is the main message of The Epigenetics Revolution?
The main message of The Epigenetics Revolution is how our genes are not our destiny and that our environment and lifestyle choices play a crucial role in our health.
How long does it take to read The Epigenetics Revolution?
The Epigenetics Revolution can be read in several hours, but the Blinkist summary can be read in just 15 minutes.
Is The Epigenetics Revolution a good book? Is it worth reading?
The Epigenetics Revolution is a fascinating and informative book that offers valuable insights into the science behind genetic regulation. It is definitely worth reading.
Who is the author of The Epigenetics Revolution?
The author of The Epigenetics Revolution is Nessa Carey.
What to read after The Epigenetics Revolution?
If you're wondering what to read next after The Epigenetics Revolution, here are some recommendations we suggest:
- The Dharma in DNA by Dee Denver
- She Has Her Mother’s Laugh by Carl Zimmer
- It Didn't Start With You by Mark Wolynn
- Mindsight by Daniel Siegel
- Behave by Robert Sapolsky
- Inheritance by Sharon Moalem
- My Grandmother's Hands by Resmaa Menakem
- Super Human by Dave Asprey
- Forgiving What You Can't Forget by Lysa TerKeurst
- The Lucifer Effect by Philip Zimbardo