Graves’ disease is an autoimmune disorder that causes your thyroid gland to become overactive. Unfortunately, in some cases, it can lead to vision problems. Fortunately, it’s not too common, only affecting a small segment of the population. But if you were in that group, wouldn’t you like to know how a trace mineral might help?
Hyperthyroidism can cause your immune system to attack the muscles and tissues around the eyes resulting in Graves’ orbitopathy. Doctors don’t think it can be prevented, but you’re more likely to get it if you smoke. Most people notice eye symptoms within six months of being diagnosed.
The symptoms of Graves’ orbitopathy
- Bulging eyes
- Double vision
Two recent reviews are trying to shed some light on selenium’s controversial use for patients with mild Graves’ orbitopathy.
In the journal Nature Reviews Endocrinology, a team from Denmark and the United Kingdom “provided an in-depth overview of the role of selenium in thyroid disorders.” In the journal Hormones, investigators from Germany and Poland focused specifically on Graves’ disease.
Clinicians have widely recommended Selenium for a broad range of autoimmune thyroid diseases; however, it is only recommended for mild cases.
In the Nature Review’s overview, epidemiologic studies also suggested an increased prevalence of benign thyroid disorders in people with low selenium levels. Studies show Selenium might reduce ocular involvement and restore normal thyroid function in patients with Graves’ disease.
The Nature Review’s authors also described differences in the selenium content of the soil in
various parts of the world could result in significantly different selenium intake levels.
There has been considerable interest in selenium supplementation for patients with Graves’ orbitopathy after reviewing the 2011 study by the European Thyroid Association/European Group on Graves’ Orbitopathy (EUGOGO).
In 2011, a single study of 159 mild Graves’ orbitopathy patients reported the findings of a randomized, double-blind, placebo-controlled trial. The trial compared Selenium, pentoxifylline and placebo. In six months, patients treated with Selenium had improved quality of life scores, less eye involvement and slower disease progression.
According to experimental evaluations in 12 months, these benefits were retained and were not found in the group treated with pentoxifylline.
This single study is limited and lacks verification because it has not been replicated in another independent trial.
Selenium deficiency is rare in the U.S, but certain groups of people could be at risk, including those:
- undergoing dialysis
- living with HIV
- living with gastrointestinal conditions like Crohn’s and celiac disease
According to Douglas S. Ross, M.D., in an interview with MedPage Today, “I tell patients about the European study and why it may not be applicable to the U.S. But I do suggest to my patients who are not candidates for more aggressive treatment to try it: 100 mcg bid, available at Whole Foods and many pharmacies,” he says. “Because of its association with type 2 diabetes, I suggest they try it for 6 months and then stop it if [there is] no benefit.”
Authors of both reviews recognize the potential for selenium supplementation and emphasize the growing need for randomized trials.
Selenium in thyroid disorders – essential knowledge for clinicians — Nature.com
Do patients with grave’s orbitopathy benefit from extra selenium? — Medpagetoday.com
What eye problems does graves’ disease cause? — Webmd.com