High cholesterol affects an estimated 98 million people, half the American population, and is a major contributor to heart disease, America's number one killer. But the most commonly known cholesterol raisers -- diet or insufficient exercise - are not necessarily the problem for everyone. Undiagnosed and undertreated hypothyroidism can cause elevated cholesterol, and of the estimated 13 million Americans with thyroid disease, at least half are undiagnosed and millions more are not sufficiently treated, opening them up to the risk of continued hypothyroidism symptoms despite treatment.
Some experts even believe that the numbers of undiagnosed are underestimated, and that the current thyroid diagnostic criteria are too narrow and rigid, and are missing many millions more with subclinical and low-level hypothyroidism.
This January, as part of Thyroid Awareness Month, the American Association of Clinical Endocrinologists (AACE) has released the results of a new survey on the thyroid-cholesterol connection, looking at the connection between undiagnosed hypothyroidism and high cholesterol.
Materials released by the AACE in support of this information campaign include:
- Americans Urged to "Take Cholesterol by the Neck"
- Understanding the Thyroid-Cholesterol Connection
- Facts about Thyroid Disease
- Take the Thyroid Neck Check -- The Neck Check Card
- Fewer than half of the adults who had been diagnosed with high cholesterol know if they had
ever been tested for thyroid disease, despite the well-documented connection between the two conditions.
- Ninety percent of those surveyed were unaware of the thyroid gland's impact on cholesterol regulation.
The National Cholesterol Education Program and the Food and Drug Administration recommend thyroid testing in patients with high cholesterol levels. The prescribing information for the popular cholesterol-lowering drugs also recommends that patients be tested for thyroid disease before beginning cholesterol-lowering drug therapy.
It's unclear why, given that guidelines strongly recommend thyroid testing, more doctors are not insisting on thyroid testing upon the finding of high cholesterol. This may be a result of the medical profession's general lack of understanding about thyroid disease, or the tendency of doctors and patients to write off general symptoms such as fatigue, weight gain, and depression, particularly in women.