Uncontrolled diabetes is another common reason as to why circulation can be impaired to the extremities. High blood sugar levels can lead to hardening of the arteries, as well as damage to nerves that help control circulation. A comprehensive approach is required in these cases. However, the supplements alpha-lipoic acid and Ginkgo can provide much benefit. Both cause constriction of the blood vessels resulting in reduced blood flow through the hands and feet.
Smoking tends to be more of a major factor than coffee consumption.
I recommend coffee drinkers reduce their intake to one or two cups daily, while switching over to teas such as ginger root, which is very warming to the body. Smokers need to gradually cut down and increase their intake of antioxidants such a vitamin C, E, carotenoids, and selenium. Most smokers improve with the use of the herb Ginkgo biloba, which I will discuss more later in this article. In addition, I ask my patients what type of exercise program they following. One of the cheapest and most successful ways to improve blood flow is through regular exercise.