How can hands and thighs turn red and black when the weather is cold in winter?

Cold hands and feet have a lot to do with the blood vessels of the heart, because blood is sent by the heart and brings oxygen to all parts of the body. Oxygen can generate heat energy after burning, and hands and feet will be warm. Once the function of cardiovascular system is damaged, it will affect the delivery of blood, causing cold hands and feet. From the perspective of traditional Chinese medicine, hands and feet are prone to cold and numbness, which mostly belongs to qi and blood problems, because qi deficiency and blood deficiency lead to poor blood operation and insufficient blood volume.

main reason

* weak heart, unable to supply blood to peripheral parts of the body.

* insufficient blood in the body, low hemoglobin and red blood cells.

* Blood vessel blockage, or fever and cold will affect the central nervous system of the brain, leading to cold hands and feet.

* There is something wrong with the sympathetic nerve function, which makes the muscles unable to contract when it is cold and generates heat energy to resist the cold.