Low cholesterol concerns reader

DEAR DR. GOTT: In a past column, a reader wrote about low cholesterol levels. The writer’s was 135. This has me concerned because my total cholesterol is 91 with an HDL of 51 and an LDL of 40. Should I discuss this with my doctor? If I should, why? Do I need to raise my cholesterol levels?
DEAR READER: My answer greatly depends on all the important information that you left out, such as age, gender, medical conditions and medications you are taking. If you know your cholesterol numbers, you had to have gotten them from a laboratory, which should have reported to your personal physician, so he or she probably already knows.
If you have a cardiac condition, such as coronary-artery disease, or a history of heart attack or stroke, your numbers are probably excellent. If you have a family history of heart attack or stroke and have a personal history of high cholesterol treated with statins, your numbers may be good.
Given that your LDL, or “bad” cholesterol,” is so low, you are likely taking in little dietary cholesterol and are on a cholesterol-lowering statin drug. If you are not using medication, you may simply be blessed with a body that expertly controls its use and production of fats.
Some studies show that very low total cholesterol may lead to anxiety or depression. Others suggest a connection between increased risk for certain cancers and a very low LDL level. There are no specific limits on how low is too low because each person is different. For example, your numbers may be too low and result in problems for one person, but they can be healthful for you. If you have a history of having low numbers, don’t worry. If your numbers are low because of medication and you are experiencing problems, perhaps your physician can adjust your dosage.
If you are concerned, then speak with your doctor. He or she is your best resource for answering your specific medical questions.
To provide related information, I am sending you a copy of my Health Report “Understanding Cholesterol.” Other readers who would like a copy should send a self-addressed stamped No. 10 envelope and a $2 check or money order to Newsletter, P.O. Box 167, Wickliffe, OH 44092. Be sure to mention the title.