Calcium is water soluble, but not fat soluble. It is the fifth most dissolved ion in seawater. On the other hand, fat is soluble into calcium in the body. The calcium will exâ¦tract the fat from food in the digestive system, and they combine to form a foamy substance which is not absorbed by the body, and so the fat will be flushed out.
Studies show that it is about 20 percent of the resting metabolic rate, which is about 1,300 calories a day, not of the total metabolic rate, which is about 2,200 calories a day, so the brain uses roughly 300 calories.
Trouble is, the glucose isn't enough; the brain requires about 120 g of glucose per day (the same amount of sugar found in three cans of soda!). At this rate, the brain would starve and die in about three days â but clearly it does not. This is because your body has evolved a backup plan. It's at this critical stage when the ketone bodies become all the more critical.