It is possible for blood pressure to rise when you are hungry. Hunger is a sensation that empties the gastrointestinal tract, and some people may have low blood sugar when they are hungry. Low blood sugar may lead to a transient increase in blood pressure, which usually returns on its own when blood sugar is restored. If you feel hungry often, such as when a woman is dieting to lose weight, your blood pressure will drop with the weight loss, but it will generally not be very low. In normal people, hunger does not usually lead to low blood pressure. However, if a hypertensive patient who is taking anti-hypertensive medication does not eat for a day while taking anti-hypertensive medication, his or her blood volume is insufficient, blood pressure may drop, and hypotension may occur. Clinically, it is common for elderly people, who travel to the hospital to have their blood drawn in the morning after taking anti-hypertensive drugs on an empty stomach, to be at risk of hypotension on arrival at the hospital. It is recommended to eat three regular meals and take medication regularly as prescribed by the doctor to avoid discomfort.