Essential minerals can be lost from excessive urination from too much water-weight loss. Without carbohydrates in the diet, the body breaks down its own muscle. Diets too high in meats and saturated fats contribute to heart disease. The kidneys have to work harder when the diet is too high in protein. The body cannot store excess protein, but converts it to fat.
Some people are susceptible to gout when they eat a high protein diet.
Also, much calcium is lost from the body when we increase our dietary protein to high levels. On low carbohydrate diets, people must limit their milk intake, so they may get even less dietary calcium than they would normally. Therefore, they are losing more calcium at the same time that their diet is providing less calcium. Severely restricting certain foods, such as all carbohydrates, is likely to result in binge eating. Many people will give in to cravings by eating highly sweetened carbohydrates, rather than loading up on whole grains, fruits, vegetables and milk.