Protein is an organic compound that carries out most of the important functions of the cell. Its inclusion in the diet is therefore critical. But the consumption of protein also has another important value: it can affect the absorption of other nutrients in the diet. However, science is not quite certain how it influences the absorption of calcium.
Function
Calcium is an inorganic mineral vital to the physiology of the cell. According to the National Osteoporosis Foundation, approximately 99 percent of the calcium in the body is stored in bones and teeth, where it helps to maintain the hard structure. The rest of the calcium is used by the body to help clot blood, send nerve signals, contract muscles and facilitate other important functions.
Definition
The protein power diet was first introduced in a 1995 book published by Drs. Michael and Mary Eades. A diet that is focused on protein typically restricts carbohydrates to between 20 g and 40 g a day. The theory behind the diet is that low carbohydrate intake will lower the body's insulin levels. Insulin is a hormone that has the effect of converting excess calories to body fat. Furthermore, the diet is also supposed to retain muscle mass and reduce hunger and caloric intake.
Features
The protein power diet gets most of its protein from meat, poultry and fish. Eggs and dairy are allowed as long as you keep track of carbohydrates. Grains, legumes, refined sugar and most fruits are avoided. Nuts, seeds, berries, melon, peaches and all vegetables besides starchy ones are allowed. The consumption of protein is usually calculated precisely. Fat is not regulated, as long as you maintain a strict calorie limit.
Absorption
The effect that protein consumption has on the absorption of calcium is still uncertain. A 2005 study published in "The Journal of Clinical Endocrinology and Metabolism" found that high protein intake can promote calcium absorption. It may also increase bone density. Yet, a 2003 study in "The Journal of Nutrition" found that diets high in protein cause an increased loss of calcium in the urine. It remains to be seen whether protein yields a net positive for calcium in the body.
Considerations
Calcium is primarily found in dairy, nuts and seeds. Because these foods are somewhat limited on a protein power diet, it's important to devote much of the allotted carbohydrate intake to their consumption. If you still don't consume enough calcium, then you may need to take a supplement or alter the diet slightly.
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