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I appreciate the 'healing as well as hurtful' concept, re: life experience. Useful to remember.The limited data—Mansuy says her lab is now working on an expanded study—suggest life experience can be healing as well as hurtful at the molecular level. "Environmental enrichment at the right time could eventually help correct some of the alterations which are induced by trauma," Mansuy says.
This and a few other studies suggesting epigenetic change is reversible have the potential to change the narrative of doom around the topic, researchers say. "If it's epigenetic, it's responsive to the environment," says Feig, who more than a decade ago found similar effects on brain function across generations by giving mice play tubes, running wheels, toys, and larger cages. "That means negative environmental effects are likely reversible."
What remains puzzling to me is why a nonadaptive mechanism is selectable.From the article:
I appreciate the 'healing as well as hurtful' concept, re: life experience. Useful to remember.
You lost me on your meaning, Agita. Where in the article are you referring to 'nonadaptive mechanism' being selectable? Or do you mind explaining in more depth your statement? All of this is so interesting to me, but I find some of it is 'over my head'...I don't understand it.What remains puzzling to me is why a nonadaptive mechanism is selectable.
I knew the study could be important for the group - I haven't finished it yet. Im new here and still preoccupied with adjusting to interacting with people who "speak my language." It's foreign to me and a little overwhelming.You lost me on your meaning, Agita. Where in the article are you referring to 'nonadaptive mechanism' being selectable? Or do you mind explaining in more depth your statement? All of this is so interesting to me, but I find some of it is 'over my head'...I don't understand it.
Because it works? Non adaptive for the individual can still be adaptive for survival of genes/species reproduction?why a nonadaptive mechanism is selectable.
I've always thought about that with respect to suicideBecause it works? Non adaptive for the individual can still be adaptive for survival of genes/species reproduction?
I studied evolution in college. We talked about maladaptive traits. One example, heart attacks. Certain personality types are more susceptible. Teacher gave the example of a police officer. Imagine a man who’s tough, played sports, seeks adrenaline, sees loads of crap in life. He’s also stressed, rude to his family, lonely and alcoholic. He passes relatively young from a heart attack, but already has kids and a wife. Why is this trait preserved?thought about that with respect to suicide
The hypothesis being posed is that gene expression - how an individual's genetic code is changed into a physical reality - alters as a result of exposure to extremes.But today the hypothesis that an individual's experience might alter the cells and behavior of their children and grandchildren has become widely accepted. In animals, exposure to stress, cold, or high-fat diets has been shown to trigger metabolic changes in later generations. And small studies in humans exposed to traumatic conditions—among them the children of Holocaust survivors—suggest subtle biological and health changes in their children.
Not so much more disturbing, as: the individual becomes more vulnerable to the overall impact of trauma. And that may lead to the experience being more disturbing, or not. But there is a greater likelihood that they will be damaged by the trauma. It's always useful to remember that not everyone who experiences severe trauma ends up with the particular problems of sustained psychological damage.Its my impression (assumption) that the cellular activity resulting from the exposed genes is not protective of the effects of trauma or providing protection against future trauma but actually makes the current experience MORE disturbing than it would otherwise be.
Please clarify / expound. You lost me big time with that last assertion.This IS an adaptive process - not the way humans adapt behavior, but in the way evolution itself is adaptation.
Selection happens through the reproduction of certain traits. When you use the word non adaptive it seems you are referring to the experience of the person having the ptsd symptoms. As in, “I’m struggling to adapt to life with PTSD.”why a nonadaptive mechanism is selectable.