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[–]Juniperius 10 insightful - 1 fun10 insightful - 0 fun11 insightful - 1 fun -  (7 children)

Brains are plastic. They change in function, interconnectivity, and size of various areas in response to the environment and habits of the person. If the hippocampus is smaller in depressed people, it could just as easily be an effect of depression, rather than a cause. Furthermore, a) fMRI studies are stupid, they can find what appears to be brain activity in a dead fish, b) 24 study participants is insufficient to draw any kind of conclusion and should only be used to suggest that further study might be interesting, c) one study doesn't mean anything until it has been replicated, it's only when a mass of evidence starts to build up that scientists will begin to treat the hypothesis as being strongly supported.

[–]VioletRemihomosexual female (aka - lesbian) 10 insightful - 7 fun10 insightful - 6 fun11 insightful - 7 fun -  (0 children)

In one research tram drivers all had similar brain structure.

Tram-driving is the new sex!

[–][deleted] 9 insightful - 1 fun9 insightful - 0 fun10 insightful - 1 fun -  (0 children)

one study doesn't mean anything until it has been replicated, it's only when a mass of evidence starts to build up that scientists will begin to treat the hypothesis as being strongly supported.

Hugely important point. Cochrane reviews and meta-analyses are our friends.

[–]SexualityCritical[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (4 children)

'If the hippocampus is smaller in depressed people, it could just as easily be an effect of depression, rather than a cause.'

This would still mean depression is genetic, or else this brain area would not be affected. Also, it was your study, not mine, and it didn't even agree with you. It's still, even with the lackluster sample size, most likely, statistically, that is, the case that the brain is functioning differently when it comes to those with depression. Depression is persistent, what prevents happiness, and is ongoing and continuous, unlike mere sadness. Depression is genetic because if it's not, there's no such thing as depression. What you're referring to, then, is just sadness. Depression should be understood as a disease.

[–]Juniperius 4 insightful - 1 fun4 insightful - 0 fun5 insightful - 1 fun -  (3 children)

You should probably go look up the word "genetic" before you try to have this conversation.

[–]SexualityCritical[S] 1 insightful - 2 fun1 insightful - 1 fun2 insightful - 2 fun -  (2 children)

I know what genetic means. I know what biology is. Depression is genetic, or else what's being referred to as depression is just intense sadness, or long lasting waves of sadness.

[–]BiologyIsReal[M] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

No, you crearly don't. If you want to continue this conversation, I suggest you learn more about genetics, neuroplasticity and how they work. Otherwise, you can expect to keep being corrected.

[–]SexualityCritical[S] 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 2 fun -  (0 children)

How am I misusing the term 'genetics'?