Selenium is a mineral found in certain foods such as organ meats, seafood, eggs, dairy products, nuts, and cruciferous vegetables.

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Pro

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Against

Evidence from Studies

Supporting (2)

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Community contributions welcome

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Selenium intake, food sources, and associated factors in Brazilian Longitudinal Study of Adult Health (ELSA-Brasil): a cross-sectional study

Cross-Sectional Study

Human

2025

This study found that people in Brazil get most of their selenium from nuts, fish, and meat—exactly what the claim says. So yes, those foods are good sources of selenium.

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Associations between food group intake and serum levels of selenium and other essential and toxic trace elements in adults

Cross-Sectional Study

Human

2026 Feb 28

This study found that people who eat more fish, dairy, and nuts tend to have higher levels of selenium in their blood, which means those foods are good sources of selenium—just like the claim says.

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.

Similar Assertions

In Brazilian adults, the majority of selenium intake comes from nuts, cooked fish, and boneless meat, with nuts providing nearly 29% of total selenium consumption.

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83%

People in Galicia, Spain, who eat more seafood tend to have higher levels of selenium in their blood, and those with sufficient selenium levels typically eat about four servings of fish per week.

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72%