People see suicide as a disease. Like heart disease. Except both of those are more like symptoms. It would obviously help if people didn't have either of those but people don't get suicidal for no reason.
At the end of the day if we have a shitty society then it's only natural that we will see it manifest itself in people.
This is very true, in reality there's probably a constellation of thousands of different factors that would cause a person to become suicidal, so one study or biomarker is merely a microcosm of a much bigger picture.
The reality is that feeling suicidal is typically a symptom of a much larger issue, and that once the behaviour is learned and solidified in a neural correlate we can't really 'unlearn' the existence of it, save for a severe brain injury or neurodegenerative disease that decimates one's memory.
Even if it was possible in the future to upregulate the survival instinct through some mechanism, this would most likely not ameliorate the underlying issue causing a person to be suicidal in the first place. Brains are very complex and fine tuned pieces of biological machinery, it is very reductionist to say that a complex process like feeling suicidal can be boiled down to a single experimental finding.
Current science is just not up to snuff with the sheer complexity and scale of unknowns that are inherent to the mind, as scary as it is, there is so much we don't know. I have a degree in this field, and I still barely know anything.
