Decreased Elasticity of Vein Walls:
Another factor is the gradual weakening of the veins themselves. Vein walls and valves lose strength and elasticity with age, making it harder for blood to flow efficiently back to the heart—especially from the lower body. This can lead to blood pooling in the veins, causing them to swell and become more visible.
In some cases, this may lead to varicose veins—enlarged, twisted veins that appear under the surface of the skin. These are particularly common in older adults, especially those who spend long periods standing or sitting.
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