>>12347867Ah, If your immune system is "higher quality" then you will clear infections more quickly, so there is less "overactivity".
Also, if you can't clear infections at all then you will probably not develop your brain very well at all.
So there is trade off.
If infection is rare, then a weaker immune system allows more energy for brain development, relative to a stronger immune system.
If infection is common, you want a strong immune system to protect you and prevent cumulative damage, so a weak immune system is unfavourable.
This said, a weak or strong immune system in a rare infection environment will produce better developed brains than a weak or strong immune system in a common infection environment, but by a different mechanism.
You can have chronic inflammation with no infection, and it will affect your brain.
And you can have no inflammation, and a severe brain infection, and it will affect your brain
Protip: unless you want to study the subject in depth yourself, disregard any one telling you stuff on this topic (including me). Intelligence is a controversial subject with a lot of ideology and politics surrounding it
