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Truth is in favor of you and me; for the truth of our enemies whom we have been serving here in the U.S.A. for over 400 years (whom we did not know to be our enemies by nature) is the truth that the Black Man must have knowledge of to be able to keep from falling into the deceiving traps that are being laid by our enemies to catch us in their way which is opposed to the way of righteous of whom we are members. ~ The Honorable Elijah Muhammad

Monday, August 13, 2012

You are what you EAT and what your eat shapes the health of future generations. Nutrition and your DNA: What is epigenetics?

You've heard the saying, "You are what you eat." While there is truth behind that statement, epigenetics show diet may also influence your DNA and the DNA of future generations. That means, your grandchildren are what you eat. Now that's a scary thought! Could your poor diet choices translate to health issues for your grandchildren? According to studies in epigenetics, the answer is yes.    | Examiner.com

Also read:

Epigenetics: DNA Isn’t Everything
Research into epigenetics has shown that environmental factors affect characteristics of organisms. These changes are sometimes passed on to the offspring. ETH professor Renato Paro does not believe that this opposes Darwin’s theory of evolution.
Epigenetics in action: experience alters DNA expression
It was long thought that methylation, a crucial part of normal organism development, was a static modification of DNA that could not be altered by environmental conditions. New findings by researchers at the Salk Institute for Biological Studies, however, suggest that the DNA of organisms exposed to stress undergo changes in DNA methylation patterns that alter how genes are regulated.
The scientists found that exposure to a pathogenic bacteria caused widespread changes in a plant's epigenetic code, an extra layer of biochemical instructions in DNA that help control gene expression. The epigenetic changes were linked to the activity of genes responsible for coordinating a plant's response to stress, suggesting that the epigenome may help organisms develop resistance to pathogens and other environmental stressors
James A. Shapiro: Epigenetics III: Epigenetic Control of Natural Genetic Engineering and Environmental Inputs into Evolutionary Change
In the last blog we saw how cells keep track of invading DNA and use that information to target copies for incorporation in silent chromatin. The ability of cells to silence mobile genetic elements and other invading DNAs is a key epigenetic control process maintaining genome stability in normal times, when growth and reproduction proceed smoothly. The silent elements and other natural genetic engineering agents do not disturb a genome that is functioning well.
But what happens when the going gets tough? Do the tough get going in the genome, generating change to get out of trouble? The answer is: Yes, they do. We know that all kinds of stress conditions activate natural genetic engineering processes. These stresses range from DNA damage, exposure to various poisons and lack of nutrients to infection, dehydration and too much salt.

Facts and History:
Transgenerational epigenetic inheritance: More questions than answers
Epigenetic modifications are widely accepted as playing a critical role in the regulation of gene expression and thereby contributing to the determination of the phenotype of multicellular organisms. In general, these marks are cleared and re-established each generation, but there have been reports in a number of model organisms that at some loci in the genome this clearing is incomplete. This phenomenon is referred to as transgenerational epigenetic inheritance. Moreover, recent evidence shows that the environment can stably influence the establishment of the epigenome. Together, these findings suggest that an environmental event in one generation could affect the phenotype in subsequent generations, and these somewhat Lamarckian ideas are stimulating interest from a broad spectrum of biologists, from ecologists to health workers.

Watch Epigenetics on PBS. See more from NOVA scienceNOW.


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