Brain is a complex network and this must be feed by good flow of blood, healthy blood.
The red cells when crossing the very very small veins on your brain must travel easily without any interference.
Some veins on your brain are so small that only one rbc (reed blood cell) can travel at each time. you can imagine a stack of cells trying to cross a so small space one at a time... The cells of your brain (neurons) are not getting a good supply of oxigen and nutrients and you have all sorts of strange symptoms and crazyness like behaviour...
When your blood have problems the red cells sticks one on each other forming like a stack of coins glued together. This stack of coins (RBC's) are unable to enter those small spaces to feed with oxigen and sugars your complex brain network.
99% of people suffering of brain fog have a dirty blood full of debris from undigested food in the blood this causes the stack of coins, also excess of proteins from food make your blood very high in viscosity, this kind of viscosity make your hearth suffer your kidneys does not work well and all that shit in your blood goes to your brain literally
Doctors will never, ever tell you this because they want to sell you drugs to create more diseases so that they can take more money from you and feed the pharma powerful industry
So. to get rid of brain fog is actually easy:
1 - Eat slowly and use a lot of saliva to engulf your food
2 - Avoid excess proteins (very important)
3 - Avoid too much Sugar
despite brains needs Sugar
4 - IMPORTANT; Buy some proteolitic enzimes like Bromelain, pepsin and digestive enzymes and drink lots of it on a empty stomach.
5 - Eat less and continue on enzymes until you feel that your brain is refreshed. You will know what I mean immediatelly in the first days of taking digestive enzymes your system will become alive again and well.
6 - Drink Gingko Biloba liquids or pills to decrease the viscosity of your blood.
7 - Every day in the mornings force your system to flush all that shit accumulated inside literally, let me go straight to the point you have to flush every single day if you don't please start eating fibers, this is a very important step in healthy brain because all the dirty inside your tubes goes again into the system and make your blood a total poison not only for your brain but to your entire system, things like putrecin and cadaverin substances are killing you and feeding parasites
Believe-me the cause of your brain malfunction is on your dirty and viscous blood.