*The rate of cardiac output. The harder the heart rate, the higher the blood pressure.
*The amount of blood present in the body. The more blood, the higher the pressure. Some research indicates that there is a relationship between dietary salt intake and blood volume.
*Size and smoothness of blood vessel walls. This is called resistance. The higher the resistance, the higher the blood pressure. Lower resistance; lower blood pressure.
*Blood thickness. The thicker the blood, the higher the blood pressure. Certain medical conditions can change the thickness of the blood.
*Blood pressure can temporarily drop quickly when someone stands up from a sitting position.
*Toxins, including toxins from blood pressure medicines
*Ailments such as Sepsis or Hemorrhages