The Epigenetics Revolution

The title of this post is identical to the title  of a book by Nessa Carey.  The Subtitle is How Modern Biology is Rewriting Our Understanding of Genetics, Disease, and Inheritance.  The research has shown how naive the nature nurture distinction was and how wrong headed was IQ research that estimated numerical contributions of genes and environment to IQ.  Presumably the immediately preceding post has disabused you of those issues.  But Flynn does not specifically mention how epigenetics further muddies any distinction.

Epigenetics refers to how information is read out of our genes.  Carey tries to make the topic easy, but it is a very complicated topic.  It is better to have the modest goal of understanding the ramifications of the topic.

Even identical (monozygotic) twins can vary.  A television program presented the case of two identical twin sisters.  One was quite successful both academically and socially.  The other was autistic.  To be sure, such extreme cases are exceedingly rare, but the differences between identical twins increase as they age.  Much of this can be attributed to errors in the readout from the genes.  But childhood experiences can affect this readout.

Go to the healthy memory blog post “Turning on Genes in the Brain” to learn how adverse childhood experiences can cripple a child psychologically for life and lead to drug addiction and criminal behavior.  Moreover, the negative changes in the DNA of the child can be passed on to her children.

However, good habits and good experiences can lead to beneficial epigenetic experiences.  There is a series of healthy memory blog posts on how meditation can produce these changes.  First go to the post “An Update of the Relaxation Response Update. Then ago to the next in the series, “The Genetic Breakthrough—Your Ultimate Mind-Body Connection.”  Then go to “Cancer and the Genetic Horizons on the Mind
Body Treatment.”  Then go to “Cognitive Benefits of the Relaxation Response and Mindfulness.”  You might also want to review “The Two Step Process,” and for some personal tips on meditation, “Personal Tips on Meditation Techniques In General and the Relaxation Response in Particular.”

© Douglas Griffith and healthymemory.wordpress.com, 2016. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Douglas Griffith and healthymemory.wordpress.com with appropriate and specific direction to the original content.

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