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.
How many calories does a person need per day? WebMD states that females ages 19 through 30 who are sedentary should consume between 1,800 and 2,000 calories per day. If they are moderately active they should eat up to 2,200 calories. If they are highly active then they should eat 2,400 calories.