The cause of nutritional deficiency

There are many reasons for the lack of nutrition, such as lack of vitamin, trace element and mineral shortage..

1.Nutrient intake is insufficient.

The most common is the lack of food intake, including the primary and secondary intake of insufficient. Second eclipse, vegetarian, eating refined foods and for cooking is not reasonable and destruction of nutrients such as also causes some inadequate intake of nutrients.

2.Nutrient malabsorption.

Nutrient malabsorption caused by changes in the digestive system of morphology, biochemistry and physiology, such as absorption area reduction, secretes the obstacle and hyperperistalsis and oral lubricant, alkali and sorption agent.

Diarrhea can cause a variety of nutrient deficiency. Resection of the stomach, duodenum easily lead to fat, folic acid, fat soluble vitamins and vitamin B12, iron deficiency. Constipation often taking liquid paraffin can make carotene malabsorption.

In recent years, the reasons that the imbalance between nutrients is caused by malabsorption. Such as excessive dietary fiber can affect the absorption of inorganic salt, dietary iron and zinc need to maintain a certain proportion, such as a high, will affect the absorption of the other side.

3.Nutrient use to reduce.

The use of nutrients is less common in the liver disease because the nutrition can't make the necessary changes in the liver and the liver bag manufacturer can't store the nutrients.. Such as cirrhosis patients in the body can't change the carotene into vitamin A and vitamin A deficiency occurs. Some drugs is an antagonist of certain nutrients, such as desoxypyridoxine anti-tumor medicine is vitamin B6 allotropic substance can inhibit need vitamin B6 enzymes, the effects of vitamin B6 utilization.

4.Nutrient loss increased.

The long-term fever, metabolic hyperthyroidism, cancer and other consumption diseases (such as diabetes, tuberculosis), etc., and other obvious increase in the consumption of various substances in the body. The trauma, the operation, the large area burn and so on urge the organization to decompose the metabolism, thus causes the body the nitrogen from the urine and the wound surface to lose the increase. Parasitic infection will enable nutrient loss increase, digestive tract fistula, and renal disease, enable the excretion of nutrients increased chronic blood loss to nutrient loss is the cause of the lack of nutrition.

5.Nutrient need to increase.

In human growth and development, pregnancy, lactation, and strenuous exercise etc. under the situation, the amount of required nutrients increased significantly, this time, such as inadequate intake of nutrients, absorption and utilization of barriers and bag factory other reasons, you are more likely to occur in the lack of nutrition.