What are the possible causes of lower than normal cholesterol?

Below: Look at the internet for complete answer, but here is a summary of possible causes. Possible causes of low cholesterol are:[citation needed] statins hyperthyroidism, or an overactive thyroid gland adrenal insufficiency liver disease malabsorption (inadequate absorption of nutrients from the intestines), such as in celiac disease malnutrition abetalipoproteinemia - a rare genetic disease that causes cholesterol readings below 50 mg/dl. It is found mostly in Jewish populations.[2] hypobetalipoproteinemia - a genetic disease that causes cholesterol readings below 50 mg/dl[2] manganese deficiency Smith-Lemli-Opitz syndrome Marfan syndrome leukemias and other hematological diseases[3]