/sci/ - Science & Math

1) Behavior modification and intelligence reduction.
2) Population management. Whether it be via fertility, average lifespan, rate of chronic illnesses, etc. This can be tailored to a given race and region as needed.
3) Social stability. Inducing chronic diseases then making them a thing can create solidarity. Weakened people are more dependent, and therefore they're more fearful and easier to control. Their continued existence is tied to the system, they cannot leave, they can dream but they know they cannot ever live on their own. The economic aspect is another layer on top of it.

You want good cattle. They're born, clamp on the cord, marked on their genitals, tag on the ear, injected with whatever you deem necessary. In the modern world, from conception you are simply raw material to shape, form, mold, refine, reduce, manufacture, and remake in the image of a New World.

Modern warfare is waged via infiltration, coercion, subversion, gradual reduction, and is played out over generations. You can't conquer the adults outright so you must covertly damage and take hold of the minds of their children. An invisible third world war, the age of neurowarfare. And we're well into it.