What causes low urea levels

Low urea levels may be caused by insufficient protein intake, abnormal liver function, excessive water intake, malnutrition, or physiological changes during pregnancy.

1. Protein deficiency:

Long term low protein diets or vegetarians are prone to low levels of urea. Urea is the end product of protein metabolism. When there is a lack of high-quality proteins such as fish, meat, and eggs in the diet, the synthesis of urea nitrogen by the liver will decrease. This group of people needs to gradually increase their intake of soy and dairy products.

2. Abnormal liver function:

Patients with chronic hepatitis or cirrhosis may experience a decrease in urea levels. The liver is a key organ for urea synthesis, and when liver cells are damaged, the obstruction of ornithine circulation can lead to a decrease in urea production. This type of situation is usually accompanied by abnormal indicators such as elevated transaminase and decreased serum albumin.

3. Excessive water intake:

Drinking a large amount of water or intravenous fluids in a short period of time may dilute the concentration of urea in the blood. This physiological decrease is common in individuals who drink excessive amounts of water before a physical examination, and usually has no pathological significance. It is recommended to maintain a normal amount of water intake before a follow-up examination. 4. Malnutrition: Patients with long-term dieting or digestive and absorption disorders are prone to low levels of urea. When the body lacks essential amino acids, protein breakdown metabolism weakens and the raw materials for urea synthesis are insufficient. This group of people often exhibit symptoms such as weight loss and muscle loss simultaneously.

5. Pregnancy reactions: In early pregnancy, due to blood volume expansion and fetal nutritional needs, pregnant women's urea levels are often lower than those of ordinary adults. This is a normal physiological adjustment that usually gradually recovers after mid pregnancy and does not require special intervention. When urea is found to be low, it should be judged comprehensively based on other indicators. It is recommended to increase the intake of high-quality protein such as fish, chicken breast, tofu, etc., and ensure a daily protein supply of 1-1.2 grams per kilogram of body weight. Individuals with abnormal liver function should undergo regular liver function and abdominal ultrasound examinations, and avoid alcohol consumption and high-fat diets. Pregnant women and malnourished individuals can supplement whey protein powder or multivitamins appropriately. Pay attention to a balanced diet in daily life, avoid long-term single diet structure, and maintain normal water intake within 24 hours before physical examination.