Visible veins in hands can be a cosmetic issue, but they may also be a sign of a medical problem like a vascular disease. Here are some factors that can cause veins to be more visible in hands:

• Less body fat: With less fat to cover and pad the skin around veins, they can protrude more on the surface of the skin. This happens not only on hands but also on other body parts.

• Hot weather: Heat can play a role in why veins are so visible. With increased temperatures, veins will dilate and expand. This expansion adds stress to the vein wall and can be painful or crampy. With blood pooling under the skin from hot weather, you may notice blue ropey-looking veins on your hands.

• Genetics: Visible veins in hands could be part of your makeup. If this is the case, the veins most likely don’t signify a health concern, but you may opt for a cosmetic procedure to reduce the appearance.

• Aging: As we age, body fat is redistributed, and skin becomes thinner, making veins more prominent. It occurs more in women than in men.

• Weight: Being underweight can make hand veins more visible.

• Exercise: During exercise, your blood pressure increases, which can widen your veins, making them look more obvious. Also, when your muscles contract during exercise, they place pressure on surrounding veins. This is especially common during lifting.

• Tight clothing: Tight clothing can restrict blood flow, and in turn, the blood pressure in your veins can increase, making them more visible. This often happens in the waist, thighs, and legs.

• Medical conditions: Sometimes, visible veins can be a sign of a medical condition like varicose veins or deep vein thrombosis (DVT) .

If you are concerned about the appearance of your hand veins, it is best to consult a doctor to know more about what you are going through. They can diagnose the reason behind the prominently visible veins and suggest appropriate treatment options.