I did some further looking and found this link that I think will interest you.
http://thyroid.about.com/od/heartdisease/a/metabolicsyn.htm
While reading the info, I thought this would be of interest to you. "Researchers have now found that even subtle changes in thyroid function increase the risk for metabolic syndrome."
Just to be sure about those two I looker around and found this info.
Rosuvastatin is used together with lifestyle changes (diet, weight-loss, exercise) to reduce the amount of cholesterol (a fat-like substance) and other fatty substances in your blood. Rosuvastatin is in a class of medications called HMG-CoA reductase inhibitors (statins).
Fenofibrate is used with a low-fat diet and sometimes with other medications to reduce the amounts of fatty substances such as cholesterol and triglycerides in the blood and to increase the amount of HDL (high-density lipoprotein; a type of fatty substance that decreases the risk of heart disease) in the blood ...
So it looks like you must have issues with cholesterol and triglycerides that you doctor is trying to reduce. That, and your mention of weight, makes me wonder if you are being adequately treated for your hypothyroidism. Please have a look at this list of 26 typical hypothyroid symptoms and tell us which ones you seem to have.
http://endocrine-system.emedtv.com/hypothyroidism/hypothyroidism-symptoms-and-signs.html
Also, please post your thyroid related test results and reference range shown on the lab report, so that members can comment on the adequacy of your testing and treatment.