Smoke Deter Review Part-1 - Version 1.0 Why does smoking cause a rise in blood pressure? Smoking is highly dangerous as it causes high blood pressure besides many other diseases. There are various options to help quit smoking. It is best to use an option which is effective without having any side effects. An increase in blood pressure is not caused by smoking alone. The constriction of the blood vessels is caused by the chemicals in cigarettes. When the blood vessels are narrowed, the heart needs to pump with greater force in order to circulate blood to all the tissues of the body. The heart rate will increase, besides a rise in the blood pressure. The chemicals present in the cigarette will be replacing the oxygen in your system by displacing it as you smoke a cigarette and inhale nicotine. This means that there is less oxygen circulating in the body. The constriction or narrowing of the blood vessels is due to nicotine which is responsible for secretion of hormone adrenaline by the adrenaline gland. The heart has to work extra hard due to this to pump blood through the body which increases the blood pressure