What is the cause of dizziness during pregnancy?

Dizziness in pregnant women is mainly due to inadequate blood supply to the brain.
In early and mid-pregnancy, due to the formation of the placenta, the blood pressure of pregnant women will drop to a certain extent, resulting in reduced blood flow into the cerebral vessels, causing dizziness.
Early pregnancy reactions such as nausea and vomiting will occur in early pregnancy, causing the pregnant woman to eat too little and have low blood sugar, causing dizziness.
In late pregnancy the uterus enlarges and when lying flat, the enlarged uterus compresses the inferior vena cava behind it, reducing blood flow back to the heart and reducing blood ejection from the heart, resulting in reduced cerebral blood flow and causing dizziness.
Pregnant women are responsible for the blood supply of both themselves and their child during pregnancy, which can predispose them to anaemia and cause dizziness. Dizziness can also be caused by high blood pressure during pregnancy, and severe malignant hypertension leading to eclampsia, which requires urgent attention. Most dizziness in pregnant women can be relieved, but if it does not ease for a long time or recurs, you need to seek immediate medical attention and treatment under the guidance of a medical professional, and remember not to take private medication.