Cholesterol Levels

I have some questions about my cholesterol levels.  I am 44 years old and weigh 168 lbs. For the last year and half I have been lifting weights 4 to 6 times per week and jogging 2 to 3 times per week for about 30 to 45 min.  I have lost about 25 lbs.  I watch what I eat.  No trans fat and little as possible of the saturated fats.  I do not eat anything fried or very little.  I take flax seed oil and other EFA’s.  I drink protein shakes 3 times a day and one with soy milk (added DHA).  
My father died at age 69 with a heart attaches and my brother died at age 39 with lung cancer.


6/30/07 cholesterol screen
   Total cholesterol – 184, hdl – 31, ldl – 123, triglycerides – 154, hdl ratio – 5.9, ldl ratio – 4.0

7/30/07 cholesterol screen
  Total cholesterol – 149, hdl – 27, ldl – 97, triglycerides – 123, hdl ratio – 5.5, ldl ratio – 3.6

My family Dr put me on crestor 5mg 8/6/07.

9/10/07 cholesterol screen:
Total cholesterol – 97, hdl – 29, ldl – 50, triglycerides – 90, hdl ratio – 3.3, ldl ratio – 1.72

Should I be concern about total cholesterol being to low? Does this increase my chances of getting cancer?
Why is my hdl still low after exercising?  Is it just my genetics?  How concerned should I be? What else should I do to increase my hdl?  Since my last hdl ratio is less than 3.5, should I still be concerned as much with my low hdl?

[ladypar]

know one answers the question if i have hdl 73 fats 130 and hdl 280 with total ldl 286
doesnt the good hdl rule out taking medication? one risk factor h/pcontrolled.