Brenda Khan
Selenium is an essential mineral and antioxidant that plays a vital role in keeping the body healthy. It is a trace element, meaning the body only needs a small amount of it. Selenium is found in many foods, so deficiency is rare, but it can happen and lead to negative health outcomes such as suppressed immune function. The amount of selenium needed depends on age, sex, and other factors such as pregnancy. The recommended daily allowance of selenium is 55 micrograms, and this can be achieved through consuming a variety of selenium-rich foods.
How to increase selenium in your diet
| Characteristics | Values |
|---|---|
| Selenium is a | trace element or mineralnutrientantioxidant |
| Selenium is important for | brain healthimmune systemthyroid functionreproductionDNA and muscle repairinhibiting cell proliferation |
| Selenium-rich foods include | Brazil nutsFishEggsLean meatsChicken liverGarlicRed meatGrainsBeefTurkeyChickenBrown riceWholemeal/wheat breadBaked beansCottage cheeseBrown, long-grain riceMacaroni |
| Selenium dosage | 55 ug (micrograms) per day75 mcg for men and lactating women in the UK60 mcg for women in the UKThe amount also depends on age, pregnancy, and breastfeeding |
| Other information | Selenium deficiency is rareToo much selenium can be harmful and lead to health problems like muscle tremors, hair loss, stomach upset, lightheadedness, heart attack, respiratory distress, or kidney failure |
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What You'll Learn
- Selenium-rich foods include Brazil nuts, fish, eggs, lean meats, and more
- Selenium is an antioxidant that protects the body from free radicals
- Selenium is important for brain health, the immune system, and overall well-being
- Selenium deficiency is rare but can lead to autoimmune thyroid conditions
- Selenium supplements may be harmful in large doses, so caution is advised
Selenium-rich foods include Brazil nuts, fish, eggs, lean meats, and more
Selenium is a vital mineral that is essential for good health. It is most commonly found in high-protein foods, such as Brazil nuts, fish, eggs, and lean meats.
Brazil nuts are known to contain the most selenium among nuts. Eating just 6 to 8 nuts can provide a significant amount of selenium. However, it is important to limit your consumption to a few servings per week to avoid selenium toxicity. Fish, such as salmon, tuna, and cod, are also excellent sources of selenium. Selenium plays a crucial role in acting as an antioxidant, protecting the body from oxidative damage that could contribute to diseases. It is also important for thyroid function, reproduction, cognition, DNA and muscle repair, and a healthy immune system.
Eggs are another rich source of selenium. A large hard-boiled egg provides about 15 mcg of selenium, but you can cook the egg any way you like to still get a good dose of this nutrient. Lean meats, such as beef, turkey, and chicken, are also good sources of selenium. The amount of selenium in beef can vary depending on the cut, with bottom-round beef steak providing around 37 mcg, beef liver containing about 28 mcg, and 25% fat ground beef offering approximately 18 mcg. Similarly, the amount of selenium in grain products like bread and pasta depends on the specific type and brand.
In addition to the aforementioned selenium-rich foods, there are other options to consider. For example, dairy products like cow's milk and plain low-fat yogurt contain selenium, with milk providing 6 mcg per cup and yogurt offering 8 mcg per cup. Furthermore, certain fruits and vegetables, such as bananas, mushrooms, and pistachios, can also contribute to your selenium intake. It is worth noting that the selenium content in foods can vary based on factors such as soil conditions and food processing methods. If you are unsure about your selenium requirements, consulting a healthcare professional is recommended to determine your target levels and develop a suitable dietary plan.
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Selenium is an antioxidant that protects the body from free radicals
Selenium is a trace mineral, meaning the body only needs a small amount to stay healthy. It is an essential component of various enzymes and is found naturally in foods or as a supplement. Selenium is a powerful antioxidant that protects the body from free radicals, unstable cells that can increase the risk of diseases, including cancer. It also helps the body produce selenoproteins, which protect cell membranes from damage by free radicals, reducing the risk of heart disease.
Selenium is naturally present in many foods, and deficiency is rare in the US. However, populations in China, Russia, and Europe are at risk of selenium deficiency due to low selenium levels in their soil, which affects the selenium content of locally grown foods. People who follow a plant-based diet in these regions may be particularly at risk. Additionally, certain medical conditions, such as HIV and kidney failure, can increase the risk of selenium deficiency due to malabsorption and dietary restrictions.
The recommended daily intake of selenium varies depending on age, sex, and other factors such as pregnancy and breastfeeding status. In the UK, the recommended daily intake is 75 mcg for men and lactating women and 60 mcg for women. In the US, the recommended daily allowance (RDA) is 55 mcg. It is important to note that while selenium deficiency can lead to negative health outcomes, excessive selenium intake can also be harmful. Therefore, it is advisable to consult a healthcare professional to determine your optimal selenium levels and develop a balanced dietary regimen.
To increase selenium in your diet, include selenium-rich foods such as Brazil nuts, which are particularly high in selenium. Just two Brazil nuts can provide your daily requirement. Other good sources of selenium include fish, shellfish, red meat, poultry, eggs, liver, grains, chicken, and garlic. Some specific examples include a 3 oz portion of roasted ham (42 mcg), 3 oz of canned shrimp (40 mcg), 3 oz of boneless roasted turkey (31 mcg), and one large hard-boiled egg (15 mcg). Additionally, certain plant-based foods like vegetables, brown rice, brewer's yeast, wheat germ, and enriched breads and pastas can also boost your selenium intake.
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Selenium is important for brain health, the immune system, and overall well-being
Selenium is a powerful antioxidant that fights oxidative stress, helping to defend your body against chronic conditions such as heart disease and cancer. It is an essential mineral that plays a key role in protecting your brain, supporting your immune system, and enhancing your overall well-being.
Selenium is important for brain health as it aids in cognition and protects brain cells from damage caused by oxidative stress. Studies have also shown that selenium may help improve mood and general well-being, particularly in individuals with certain health conditions. For example, selenium supplements have been found to benefit people with Hashimoto's disease, a type of hypothyroidism, by reducing thyroid antibodies and improving mood.
When it comes to the immune system, selenium is crucial for its proper functioning. Selenium helps boost white blood cells, which improves the body's ability to fight off illnesses and infections. It also plays a protective role against certain types of bacteria, viruses, and parasites. Additionally, selenium has been linked to a reduced risk of developing certain types of cancer, including breast, lung, colon, and prostate cancers.
To increase selenium in your diet, aim to include selenium-rich foods such as Brazil nuts, fish, eggs, lean meats, beef, turkey, and chicken. These foods can provide you with a good amount of selenium to support your overall health and well-being. However, if you are considering taking selenium supplements, it is recommended to consult a healthcare professional first to determine your target levels and develop a dietary regimen.
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Selenium deficiency is rare but can lead to autoimmune thyroid conditions
Selenium is a trace element or nutrient that humans need to stay healthy. It is an essential mineral that plays a role in many bodily processes, including acting as an antioxidant to protect the body from free radicals, which can increase the risk of diseases, including cancer. It also plays a role in reproduction, thyroid function, cognition, DNA and muscle repair, and immune health.
Selenium deficiency is rare, but it can occur and lead to several negative health outcomes, including suppressed immune function. In areas with severe selenium deficiency, there is a higher incidence of thyroiditis due to decreased activity of selenium-dependent glutathione peroxidase within thyroid cells. Studies have shown that the content of selenium in the thyroid is higher than in any other organ, except for the liver and kidney. Selenium deficiency may also be associated with impaired T-cell and B-cell-mediated immunity, which is significant for the immune system.
Chronic autoimmune thyroiditis (Hashimoto thyroiditis, HT) is the most common thyroid disorder in iodine-sufficient areas and is characterized by the presence of anti-thyroid peroxidase complement-fixing autoantibodies (TPOAb), which are closely associated with overt thyroid dysfunction. Selenium supplementation has been shown to decrease thyroid peroxidase antibody concentrations in patients with autoimmune thyroiditis. In a meta-analysis, selenomethionine at a dose of 200mcg once a day reduced TPOAb titer in patients with HT after three months compared to a placebo.
To increase selenium in your diet, you can consume selenium-rich foods such as Brazil nuts, fish, eggs, lean meats, beef, chicken, turkey, shrimp, ham, and whole wheat bread.
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Selenium supplements may be harmful in large doses, so caution is advised
Selenium is an essential nutrient with many health benefits. It is a powerful antioxidant that protects the body from free radicals, which are unstable cells that can increase the risk of diseases, including cancer. Selenium also plays a role in reproduction, thyroid function, DNA production, muscle repair, and immune health. While selenium deficiency is rare, it can lead to suppressed immune function and an increased risk of disease.
There are many selenium-rich foods that can help increase your selenium intake as part of a balanced diet. Brazil nuts, for example, are an excellent source of selenium, with just 6-8 nuts providing 544 mcg, or 989% of the recommended daily value (DV) for adults. Other good sources of selenium include fish, lean meats, poultry, eggs, and whole grains. A 3 oz portion of roasted ham, for instance, contains 42 mcg of selenium (76% DV), while a large hard-boiled egg provides 15 mcg (27% DV).
While selenium is essential for health, it is important to note that too much selenium can be harmful. The safe upper limit for selenium intake is 400 micrograms per day for adults. Exceeding this amount over time can lead to selenium toxicity, which is associated with serious health issues such as breathing problems, kidney failure, and heart problems. Selenium toxicity can even be fatal in high enough doses. Therefore, it is generally recommended to obtain selenium from foods rather than supplements, as whole foods are considered the best source of selenium.
If you are considering taking selenium supplements, it is important to speak with your doctor first to determine if supplementation is necessary and to ensure you are taking a safe dose. Selenium may interact with certain medications and supplements, such as antacids, chemotherapy drugs, corticosteroids, and birth control pills. It is also important to note that selenium supplements may be unsafe for people with certain autoimmune diseases, such as multiple sclerosis, rheumatoid arthritis, or systemic lupus erythematosus.
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Frequently asked questions
Selenium is a trace mineral that is vital to your health. It is an essential component of various enzymes and acts as an antioxidant by protecting your body from unstable cells that can increase the risk of diseases, including cancer. It also plays a role in thyroid function, reproduction, cognition, DNA and muscle repair, and immune health.
The amount of selenium you need depends on your age, sex, and other factors such as pregnancy and breastfeeding. The recommended daily allowance (RDA) of selenium for adults is 55 ug (micrograms) or 75 mcg for men and lactating women, and 60 mcg for women.
Selenium is found naturally in many foods, including Brazil nuts, fish, shellfish, red meat, poultry, eggs, chicken, liver, garlic, grains, and vegetables. It is also added to some enriched foods such as bread, pasta, and rice.
While selenium supplements are available, taking them in addition to food sources of selenium is not currently recommended. It is very difficult to consume too much selenium from diet alone, but large doses of supplements may cause toxicity. If you are considering taking selenium supplements, speak with a healthcare professional first.
