Atherosclerosis is the most common cause of poor blood circulation, according to Other possible causes are venous thrombosis, insufficient exercise, tight-fitting clothing and stress. More » Science Human Anatomy Blood

Abnormal circulation can cause skin discoloration, including blue, white or red hands, according to the University of Chicago Medical Center. However, poor circulation normally results in white or bluish skin, and rednes... More »

Poor blood circulation in the legs may cause foot pain. The disorder is common in diabetic people where nerves and blood vessels are damaged, explains NHS Choices. More » Health Pain & Symptoms

Double circulation in humans refers to two different circuits of blood circulation, according to the BBC. Humans and all other mammals have double circulatory systems. One circuit takes blood to the lungs to pick up oxyg... More »

Thick blood is caused by a variety of conditions, such as heavy proteins in the blood, too much blood in circulation or a blood clot system imbalance, according to Southeastern Medical Oncology Center. Diseases such as c... More »

The pathway of blood circulation is broken into two different circulatory pathways, states the National Cancer Institute. The pulmonary circuit transports de-oxygenated blood from the right ventricle into the lungs to be... More »

According to the University of Cincinnati's Clermont College, human beings have double circulation, which means that there are two separate loops through which blood travels. One loop, called the systemic loop, takes oxy... More »