Lillian:
Tendency for vein scarring is genetic. I got told to officially cool it two years ago when I was going through my treatment for DCIS. I am just one of the lucky ones with crappy veins 
I used to love donating. When I was in college and I could go in on a regular visit, we'd have races to see who could fill the bag fastest. I am not sure what all I can donate for anymore because I haven't tried since my diagnosis. I'm completely cancer free, but not sure if that would affect bone marrow or anything else. I would definitely donate if I could and I were a match for somebody, though.
Laurel Eiler Accurate Court Reporting ACR-Nashville.com