Hunger does not normally cause a decrease in blood pressure, but prolonged starvation may cause a decrease in blood pressure. Since the body’s own regulatory system can automatically regulate blood pressure within a certain range, occasional starvation does not usually lead to a decrease in blood pressure. However, when the body is in a state of prolonged starvation, the amount of water and food entering the body is insufficient to maintain metabolism, which may lead to a decrease in the effective blood volume of the body, and this decrease in effective blood volume may cause a decrease in blood pressure. It is recommended to consult a doctor for further examination to identify the cause of hunger and to make targeted treatment.