About three years ago a section of vein became very visible across the right side of my chest midway between the top of my chest and my nipple line. The vein became increasingly pronounced (blue) over the intervening period so that it now reaches (via a circuitous route) from my breast bone to the outside of my shoulder. Many more veins are also very visible on my right side to the extent that people are now commenting on them. I was diagnosed with 'high' cholesterol (5.8?) as a by-product of a thyroid test I was having. Can prominent veins be indicative of plaque build up (and that I should be doing something) or is it just my age (I am just 50 and fair skinned). Oh, I had a frozen left shoulder at approximately the same time so might it be simply that I was using my right arm more?