I just don’t get why we blanket everything under genetics.. Can that actually be proven? For instance with depression, I often hear yeah it’s genetics, nothing to be done but medication. But if a parent raises a child while battling depression, how on earth would they be able to show up fully to be able to raise a healthy, emotionally supported child? If we know adverse childhood experiences and emotional neglect changes the brain, then how is it supposed to make the right amount of chemicals? So when it’s said depression is genetics, how did they actually prove that for instance?
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One way this is done in the mental health field is by studying twin pairs and comparing identical (monozygotic/MZ) and fraternal (non-identical/dyzygotic/DZ) twins. If a trait has a genetic basis, then identical twins will test more similarly for it while fraternal twins will have more variation. If it has more to do with “nurture” or environment, then both identical and fraternal twins will test about the same.
I actually work in research with twins if you have more questions (not a PhD so not an expert but I have some practical experience).
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