Some reasons you see them are benign, such as having very pale skin or low body fat or being a weightlifter. Our skin also gets thinner as we age, so over the years you may notice your veins more than when you were younger. There are also more serious causes of visible veins that require medical attention.

What causes veins to be more visible?

In most cases, visible veins aren't a cause for concern. Exercise, hot weather, sun exposure, and tight clothing can make your veins more noticeable. Aging, genetics, and being overweight may also increase their definition. Diseases that affect the vein are more serious.

What do visible veins indicate?

As you get in shape, your muscles become more defined and you lose some of your subcutaneous fat. Both of these changes may make your veins more visible. You may also notice your veins more if you have fair skin or as you age. In these cases, the visible veins are most likely healthy.