If research provides evidence for the causes of stress-related disorders, why only focus on treating the symptoms?

This 2014 rodent research reliably induced many disorders common to humans. Here are some post-birth problems the researchers caused, primarily by applying different types of stress, as detailed in the study’s supplementary material:

Yet the researchers’ goal was to identify a brain receptor for:

“Novel therapeutic targets for stress-related disorders.”

In other words, develop new drugs to treat the symptoms.

Where are the studies that have goals to prevent these common problems being caused in humans by humans?

Where is the research on treatments to reverse the enduring physiological impacts to stress by treating the causes?

What do you think of this excerpt?

“Accumulating evidence suggests that traumatic events particularly during early life (e.g., parental loss or neglect) coupled with genetic factors are important risk factors for the development of depression and anxiety disorders.

Moreover, the brain is particularly vulnerable to the effects of stress during this period.

Maternal separation in rodents is a useful model of early-life stress that results in enduring physiological and behavioral changes that persist into adulthood, including increased hypothalamic–pituitary–adrenal (HPA)–axis sensitivity, increased anxiety, and visceral hypersensitivity.”

http://www.pnas.org/content/111/42/15232.fullGABAB(1) receptor subunit isoforms differentially regulate stress resilience”

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