Milo can cause brain damage.
Blood will be concentrated to the intestines so that it can improve the absorption of the sugar and micronutrients in Milo. During sleep, blood is supposed to flow to the brain to replenish it's ATP level. It is especially important during the first hour of sleep.
It's effect is cumulative. The blood-brain barrier will become thinner so that ATP transport from blood to the brain can be improved. At one stage, this this membrane will be so thin that it's basically gone. Then sugar (mostly sucrose and oligosaccharides) and ATP will diffuse freely between the brain and blood. It's a time bomb. Nothing much will happen if you eat & live normally.
But, if you continue to take Milo before sleeping, the sugar and ATP spike in blood will be fed into the brain (no blood-brain barrier to control this transport), driving the brain to be hyper-active and having multiple micro seizures. Chronic levels of micro-seizures will slowly damage the brain, especially in the frontal lobe of cerebrum, which controls the logic centre. It's symptomes are only be detectable after years damage.
There is only one medical procedure that can reverse this condition:
Neural-cerebral rewiring.
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