allowing more blood to flow close to the skin and facilitating heat loss. Consequently, on a humid summer afternoon or after a hot shower, your veins may appear larger and more blue than they do on a cold winter morning. This is generally a healthy, self-regulating physiological response, although it can be surprising if you have not noticed the pattern before.
The passage of time is another major factor in the increasing visibility of veins. As we age, the skin gradually loses collagen and elastin and becomes thinner. This reduced
