
What causes dry mouth and thirst in the late stages of pregnancy?
Disease description:
My wife did not experience dry mouth during her first pregnancy. Now we are expecting our second child, and she is approaching delivery. Recently, she has often complained of dry mouth and frequently feels the need to drink water, although she cannot consume much at a time. I would like to ask, what causes dry mouth and thirst during the late stages of pregnancy?

Dry mouth and thirst in the later stages of pregnancy may be caused by the following factors:
1. Hormonal changes: During pregnancy, especially in the later stages, hormone levels in the pregnant woman's body change. For example, increased levels of estrogen and progesterone may affect the secretion of salivary glands, leading to reduced saliva production and resulting in dry mouth.
2. Increased blood volume: As pregnancy progresses, the pregnant woman's blood volume increases, which may lead to more water being excreted through the kidneys, subsequently causing dry mouth.
3. Elevated metabolic rate: The increased metabolic rate during pregnancy may lead to more sweating and greater loss of body fluids, also contributing to thirst and dry mouth.
4. Gestational diabetes: Some pregnant women may develop gestational diabetes. Elevated blood sugar levels can directly affect the structure and function of salivary glands, leading to dry mouth.
Pregnant women are advised to drink sufficient water, maintain healthy eating habits, and seek timely medical evaluation when necessary, to ensure the health of both mother and baby.