isible or bulging veins on the hands are a very common physical change, especially as people get older. In many cases, they are completely harmless. However, in some situations, prominent hand veins can be linked to underlying health conditions—some of which may require medical attention.

Below, we explain why veins become more visible on the hands, when it’s normal, and when it might be a warning sign.

Why Are the Veins on My Hands So Visible?
1. Natural Aging Process
As we age, the skin naturally becomes thinner and loses collagen and fat. This makes the veins beneath the skin more noticeable, especially on the hands, where fat tissue is already minimal. Aging is the most common reason for visible hand veins and is generally not dangerous.

2. Low Body Fat Percentage
People with low body fat—such as athletes or very lean individuals—often have more visible veins. With less fat under the skin, veins are closer to the surface and easier to see.