The human brain is fueled by the blood sugar, glucose. In fact, it takes around 20% of all the carbohydrates we put into our body to run it. However, the brain is a little picky about how it likes to take in all the sugars. It prefers to take in a steady stream rather than spikes and constant rushes. The major rushes of sugar into the blood is caused by intake of simple carbohydrates often found in candy, soda, corn syrup and processed flour products. These foods will cause wild ‘ups and downs’ as the sugar is instantly transported into the bloodstream. This rapid rise causes a rush of another kind. As the balance of sugars in the blood goes off-kilter, the pancreas begins to rush out insulin which pushes sugars out of the bloodstream and into tissues causing an ‘sugar low’ enough to cause a kid to start singing John Lee Hooker songs, or even ‘The Candyland Blues’. This experience is caused by the lunging sugar levels also known as hypoglycemia.
Once hypoglycemia kicks in, this is when the next rise in energy occurs from the release of adrenal hormones that begins to take stored sugars in the liver out into the blood to restore the, now too low, blood sugars back to a normal level. This could be interpreted by some as a ‘sugar high’. With all of this up and down activity taking place, something else is affected. The highs and lows of blood sugar and adrenal hormones can cause an imbalance in the body’s neurotransmitters. This imbalance will cause individuals to feel irritable, fidgety, inattentive, and sleepy and so on. So overall, it is obviously not the sugar itself that causes the ups and downs associated with sugar intake; it is our own adrenal hormones and blood sugars being regulated. There was once a myth a long, long time ago when individuals thought sugar was within the same company of other drugs which we commonly refer to as narcotics.
Source : articlesbase
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