While I can grasp the idea that low blood sugar means “low immediate energy supply”, how come that too much sugar in the blood can cause harm?
In: 33
Many reasons, but if we are going to ELI5 it then I will go with this.
Body likes blood to have a very specific amount of stuff dissolved in it for optimal performance. Add too much stuff, sugar in this case, and everything goes crazy. Water gets pulled from cells to try to dilute blood.
Or
Since you are 5, you probably like apple juice. It is pretty sweet and tasty. If I dumped a whole bunch of sugar in your apple juice, it would be gross.
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