Many people notice that, over time or under certain circumstances, the veins in their hands become more visible. While this may seem alarming at first, visible veins are usually harmless and can be a normal variation. However, it is important to pay attention to any sudden changes or accompanying symptoms, as they may sometimes indicate an underlying health issue.
One of the most common reasons for prominent veins is a low percentage of body fat. People who are naturally lean or very muscular may have less tissue covering their veins,