I too am a member of the osteopenia club. I just had my first bone density scan done last year at age 51. Although tall and thin, 5' 8" and 115 lbs forever, I thought I was fine. Ate and exercised well my whole life (born and raised a farm girl). I ran for 28 years until the neuromas in both feet stopped that about about 3 years ago. So, interestingly enough, I have osteopenia in my spine, but the doctor said my hips are like a 25 year old. So I guess the running probably helped the hips, but not the back. Or the biking took a toll on the back. Right now I'm just doing the calcium/vit D/magnesium route. Won't know until the next one if I need to change that. But as far as skiing, I'm still the same. Just need to go even more now!