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Epigenetics

The PRH (Personal Responsibility for Health) Chronicles, Part 3: Then and Now

David Katz, M.D. | Posted 04.14.2013 | Healthy Living
David Katz, M.D.

Only by knowing Mik-tal's endowment to us can we hope to meet the challenges of the modern world. Our efforts to find our way home begin by knowing where home is, and where we are now. Our efforts to achieve dietary health begin by knowing ourselves.

Friday Freak Out: BPA May Create An Even Bigger Hormonal Mess

Lynne Peeples | Posted 03.27.2013 | Green
Lynne Peeples

Welcome again to my blog, Toxic Tracks. Please send along any feedback or ideas for environmental health topics via email or Twitter. Among its devas...

Made In The Image of God: Human Value And Genomics

Dr. Denis Alexander | Posted 03.12.2013 | Religion
Dr. Denis Alexander

To see where the clash comes from, we first need to understand the revolutionary nature of the Imago Dei idea in its original context in the texts of Genesis.

Is Darwin Threatened by Cocaine-Addicted Rats?

Nessa Carey | Posted 03.09.2013 | Science
Nessa Carey

Using experimental systems where male rats can self-administer cocaine, researchers found that the sons of the cocaine-using fathers were resistant to the allure of cocaine. These results seem counterintuitive from a scientific viewpoint.

Farm To Fork Across America: Sea-Crop Soup, From Sea To Shining Sea

Julie Ann Fineman | Posted 03.02.2013 | Food
Julie Ann Fineman

In a Tacoma holding pattern, waiting for Lee's return from sailing across the Pacific, I continued seeking out American heroes who are making changes in food quality.

New Sensitivity Gene Discovered

Scott Barry Kaufman | Posted 02.17.2013 | Science
Scott Barry Kaufman

While it's profoundly difficult predicting the developmental trajectory of any single individual, new research suggests we can influence the odds that people will retreat within themselves or unleash the fundamentally human drive to explore and create.

New Ideas About The Evolution Of Same-Sex Attraction

Rob Brooks | Posted 02.13.2013 | Science
Rob Brooks

The idea is that when the epi-marks on genes that affect sexual orientation get passed from father to daughter, then some traits end up more masculinized. Likewise, mother-son transmission of epi-marks can result in the feminization of some traits.

How Environmental Contamination Has Changed the Course of Evolution

David Crews | Posted 12.05.2012 | Science
David Crews

What we want to discuss here is the effect of endocrine-disrupting chemicals (EDCs) on evolution and show how present evolutionary theory, developed and codified prior to the chemical revolution, does not account for life in our contaminated world.

Dan Hartl, Sewall Wright, and the Role of "Ecological Opportunity" in Evolution

James A. Shapiro | Posted 11.12.2012 | Science
James A. Shapiro

Molecular analysis of genome regulation and change have uncovered additional pathways for ecological input into the evolutionary process.

Epigenetics III: Epigenetic Control of Natural Genetic Engineering and Environmental Inputs into Evolutionary Change

James A. Shapiro | Posted 09.17.2012 | Science
James A. Shapiro

McClintock predicted that we would focus on how the genome responds to challenge. Clearly, unraveling the molecular basis of epigenetic regulation is an integral part of that revolutionary research agenda.

Epigenetics II: Cellular Memory, Imprinting, and Targeting Genome Configuration With RNA

James A. Shapiro | Posted 09.12.2012 | Science
James A. Shapiro

This is number two in my series on epigenetic control of genome restructuring and hereditary transmission of traits modified by life history events. We are going to take a detour through some classic bacterial genetics history, but it will ultimately bring us back, with new insights, to epigenetic regulation.

Epigenetics I: Turning a DNA Packaging Problem Into a Developmental Control System

James A. Shapiro | Posted 09.08.2012 | Science
James A. Shapiro

Two postings back, I promised a commenter called Sierkovitz that I would discuss epigenetics. This is an important subject with major implications for understanding natural genetic engineering in evolution.

The Chemical Exposure That Keeps Going and Going and Going

Bill Chameides | Posted 08.04.2012 | Green
Bill Chameides

For many years it was thought that our genes were the whole game -- the stuff that determined our appearance, our aptitudes, and even our susceptibility to disease. But we now know it's more complicated than that. It turns out that not all of our genes are active. Some are turned "on" and others are turned "off."

Interspecific Hybridization and Introgression in Animal Evolution

James A. Shapiro | Posted 07.27.2012 | Science
James A. Shapiro

While most population biology is highly theoretical and conjectural, the Grants have been following what has actually been going on in the wild. Theirs is an exciting scientific and human story, including raising and educating their daughters in a tent while making field observations.

More Evidence That Chemicals Are Changing Who We (And Our Children And Grandchildren) Are

David Crews | Posted 07.24.2012 | Science
David Crews

We haven't proved that chemical exposure is at the root of increases in mental health disorders. What we do know with increasing confidence, however, is that chemical exposure is changing our brains, and that those changes are being passed on to our descendants.

Variation and Selection: What's the Difference? What Are the Issues?

James A. Shapiro | Posted 07.17.2012 | Science
James A. Shapiro

How could natural selection operate so that "the good ones spread in the population" if there were no positive variants in the first place? That is why I am confounded by Jerry Coyne's comment that he can explain natural genetic engineering by "garden variety natural selection."

Lynne Peeples

Could You Blame Your Ancestors For Your Fertility Problems?

HuffingtonPost.com | Lynne Peeples | Posted 05.03.2012 | Green

The environment in which your great-great-grandmother lived, breathed, ate and drank might be responsible for health problems endured by you, your chi...

10 Unexpected Side Benefits Of Working Out

The Huffington Post | Laura Schocker | Posted 03.23.2012 | Healthy Living

We all know that regular exercise can boost cardiovascular health and help you to maintain a healthy weight. But even for the most health-conscious am...

Just A Few Minutes Of Exercise Can Change Your DNA

Posted 03.07.2012 | Healthy Living

It turns out that you aren't just what you eat -- you're also "what you do," according to Juleen Zierath, professor of clinical integrative physiology...

Are You Making Your Kids Sick?

The Huffington Post | Lisa Belkin | Posted 01.31.2012 | Parents

David Code would like us to all calm down. NOW. It is urgent he says, even while understanding that urgency itself is a cause of stress, because it's ...

Eating Well Now Can Help Your Great-Grandchildren Live Longer

Scientific American | Sarah Fecht | Posted 12.20.2011 | Fifty

Experiments with worms show that altering an enzyme can not only lengthen their life spans, but that the longevity effect can be carried across severa...

Evolution: Is God Just Playing Dice?

Matt J. Rossano | Posted 12.03.2011 | Religion
Matt J. Rossano

The more we understand evolution, the less it seems like either the bogeyman creationists fear or the universal God-dissolving acid some atheists crave.

Is Our Health Determined By Our Genes?

Dr. Frank Lipman | Posted 07.16.2011 | Healthy Living
Dr. Frank Lipman

Are bad genes really destiny or are they flexible, modifiable, even changeable? The answers -- and the roadmap to a longer, healthier life -- may lie in the ground-breaking new field of "epigenetics."

8 Surprising Facts To Put The Nature Vs. Nurture Debate To Rest

Scott Barry Kaufman | Posted 11.17.2011 | Healthy Living
Scott Barry Kaufman

I teamed up with the well-known developmental psychologist David S. Moore to list eight facts about genes, twin studies and the heritability statistic that may come as a surprise to many people, even biologists!

Is There a Genie in the Genome?

David Katz, M.D. | Posted 05.25.2011 | Home
David Katz, M.D.

My own hope for genomic advances lingers. But at its best, that hope was and is a small flicker in comparison to the luminous promise of lifestyle.