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Claim
Strong Support
causal
Analysis v3

In Filipinos with mild Graves’ ophthalmopathy, taking 200 mcg of selenium daily for six months results in a measurable improvement in Clinical Activity Score compared to standard care alone.

53
Pro
0
Against

Mechanism

Synthesis from 1 study

How it works

Selenium helps the body make proteins that remove harmful molecules in the tissues behind the eyes. This stops those tissues from swelling and becoming inflamed, which reduces redness and discomfort in the eyes.

Most probable mechanism

In Simple Terms

Selenium enters the body and is used to make special proteins that clean up harmful molecules produced during normal cell activity. These clean-up proteins lower the damage in the tissues behind the eyes, which stops those tissues from becoming swollen and inflamed. As a result, the redness, swelling, and discomfort in the eyes go down.

Causal chain
1

Oral selenium is absorbed in the gastrointestinal tract and incorporated into selenoproteins, including glutathione peroxidases and thioredoxin reductases, in the liver and orbital tissues

Supported by evidence
which leads to
2

Increased selenoprotein activity reduces hydrogen peroxide and lipid peroxides in orbital connective tissue, lowering oxidative stress

Supported by evidence
which leads to
3

Reduced oxidative stress inhibits activation of orbital fibroblasts and suppresses NF-κB signaling, decreasing production of pro-inflammatory cytokines such as IL-6 and TNF-α

Supported by evidence
which leads to
4

Lower cytokine levels reduce recruitment and activation of immune cells, including T cells and macrophages, into orbital connective tissue

Supported by evidence
which leads to
5

Decreased inflammation and oxidative damage reduce edema and tissue remodeling in the orbit, specifically in the caruncle and plica, leading to lower Clinical Activity Score

Verified by multiple studies

Evidence from Studies

Supporting (1)

53

Community contributions welcome

53

6662 Effect of Selenium Supplementation on Mild Graves’ Ophthalmopathy at a Tertiary Hospital - A Six-Month Open-Labelled, Assessor-Masked, Randomized-Controlled Trial

Randomized Controlled Trial
Human

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

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Source Study

6662 Effect of Selenium Supplementation on Mild Graves’ Ophthalmopathy at a Tertiary Hospital - A Six-Month Open-Labelled, Assessor-Masked, Randomized-Controlled Trial

Score: 53
DOI: 10.1210/jendso/bvae163.1944

Similar Assertions

Among adult Filipino patients with mild Graves’ ophthalmopathy lasting less than 18 months, taking 200 micrograms of selenium daily for six months along with standard eye care results in 61.9% of eyes reaching a clinical activity score of 0 at six months, compared to 33.3% in those not taking selenium.

59
0
91%

Taking 200 micrograms of selenium daily for six months increases the percentage of adults with mild Graves’ ophthalmopathy who achieve no active inflammation, from one-third to just over six in ten, compared to those using only eye drops.

53
0
90%

In adults with mild-to-moderate Graves’ eye disease living in areas with adequate selenium levels, taking 200 micrograms of sodium selenite daily for six months leads to more patients showing improvement in eye symptoms than taking vitamin B complex alone.

0
62
86%

In areas where people have adequate selenium levels, taking selenium supplements with vitamin B complex for six months may result in a small reduction in eye inflammation symptoms for Graves’ ophthalmopathy, but the evidence is not conclusive because the study was not blinded.

0
62
86%

In patients with mild Graves’ ophthalmopathy, taking 200 mcg of selenium daily for six months is associated with a reduction in swelling of the eye tissues and improved clinical activity scores compared to those not taking selenium.

59
0
86%