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epigenetics

hormones

womb

9/11

discrete

Yehuda and Seckl

tantalizing

Sweden

Pembrey and Bygren

It appeared that epigenetics might be responsible that an event had altered the stress response in the children .
What these findings did was suggest to us that we need to be looking where we hadn't even considered looking before.
To know for certain, that this was an epigenetic effect, they'll need to be sure that their observations weren't simply due to high levels of stress hormones in the womb.
Now and here is the bit where we have to speculate. The animal work would suggest that this might then persist into the next generation.
If they find the same stress effects in the children's children of 9/11, then it will be clear that a genetic memory of a stressful event can travel through the generations.
That's the key thing next to find out. But the 9/11 population will be very very important for us to be able to follow what is a single discrete event.
The work of Yehuda and Seckl offers tantalizing evidence of proof of inherited epigenetic effects in humans. But they need data that extends beyond just one generation. The only way forward was to look back to the past. In Sweden, Pembrey and Bygren had data that provided the chance to study the effects of famine through many generations.

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