Grandparents have always been important. Today, they're even more important. In busy, two-career and single-parent families, an involved grandparent goes a long way to filling a void for children. In extreme situations, the courts have found it's often a grandparent who can reach a troubled teen when no one else can.
Some people, genetically, are born with weaker or smaller veins than others - and some people are born with larger, and more flexible vein tissues. Due to genetics, some people just have poor, weak veins. This only affects the large return veins you can see however - the veins which transport the rest of your blood are likely fine. Regardless of the vein size, blood can still be drawn. I personally have smaller and weaker veins, and can still donate, but sometimes it takes a few tries.
The vein swells from the blood that collects there, which causes varicose veins. Smaller varicose veins that you can see on the surface of the skin are called spider veins. Varicose veins are common, and affect more women than men. They don't cause problems for most people. However, in some people, they can lead to serious conditions, such as leg swelling and pain, blood clots, and skin changes. Risk factors include: