Adding to what Jeri says I too have elevated cholesterol which is unaffected by diet. I did take fish oil caps for a while but they did nothing for my LDL level. I still take them when they are on sale but for other beneficial reasons, there is no strong evidence that fish oil reduces LDL cholesterol.

As for statins there is more and more evidence that their use is beneficial not only for those with elevated LDL but even for people with normal levels. I personally know an invasive cardiologist who takes them daily without even knowing what his LDL level is. As he says you can't have too low LDL.