ia blue veins means more oxygen

Answer 1

is being carried throughout the body. Blue veins appear when deoxygenated blood is carried back to the heart and lungs to be re-oxygenated. The blue color of the veins is due to the deoxygenated blood absorbing more light and appearing more blue in color. So, if someone has prominent blue veins, it could indicate that they have good circulation and oxygenation in their body.