1. The heart is weak and cannot supply blood to the peripheral parts of the body.
2. Anemia: insufficient circulating blood volume or low hemoglobin and red blood cells.
3. The ability of vasoconstriction and blood return will be weakened, which will make the blood circulation of hands and feet, especially fingertips, not smooth, which is often called "peripheral circulation is not smooth".
Second, yang deficiency
Chinese medicine believes that cold hands and feet is a kind of "closed disease", and the so-called "closed" is unreasonable. Affected by cold weather or body cold, the liver pulse is cold, and the hematopoietic function of the liver is affected, resulting in kidney yang deficiency, cold limbs, red or white hands and feet, and even a feeling of pain.