Selenium is an essential nutrient, and knowing about Foods Containing Selenium can help you optimize your health. In this comprehensive guide from larosafoods.com, we’ll explore the best food sources of selenium, their health benefits, and delicious ways to incorporate them into your diet. Discover selenium-rich recipes, explore its antioxidant properties, and understand its role in overall wellness. Boost your immune system, enhance thyroid function, and enjoy a balanced diet. Learn about selenium-rich meals, selenium bioavailability, and potential deficiencies.
1. Why Is Selenium Important for Your Health?
Selenium is vital for various bodily functions. It acts as an antioxidant, supports thyroid function, and boosts the immune system. Without adequate selenium intake from foods containing selenium, your body might struggle to perform these crucial tasks effectively.
What are the key functions of selenium in the body?
Selenium is a trace mineral that plays several crucial roles in maintaining optimal health. The key functions include:
- Antioxidant Defense: Selenium is a component of glutathione peroxidases, enzymes that protect cells from oxidative damage by neutralizing free radicals. This antioxidant activity helps prevent chronic diseases. According to research from the University of California, Berkeley, in July 2025, selenium provides antioxidant properties.
- Thyroid Hormone Metabolism: Selenium is essential for the proper functioning of the thyroid gland, aiding in the conversion of thyroxine (T4) to triiodothyronine (T3), the active form of thyroid hormone.
- Immune System Support: Selenium enhances immune function by supporting the activity of immune cells and modulating inflammatory responses. A healthy immune system can better defend against infections and illnesses.
- DNA Synthesis and Repair: Selenium plays a role in DNA synthesis, repair, and maintenance, which is vital for cell growth and preventing genetic mutations.
- Reproduction: Selenium is important for both male and female reproductive health. In men, it supports sperm motility and fertility.
- Protection Against Chronic Diseases: Adequate selenium intake is associated with a reduced risk of certain chronic diseases, including cardiovascular disease and some types of cancer.
- Selenoprotein Production: Selenium is incorporated into selenoproteins, which have diverse functions, including antioxidant defense, thyroid hormone metabolism, and immune function.
Ensuring an adequate intake of selenium through foods containing selenium or supplements is crucial for maintaining these vital bodily functions and overall health.
2. What are the Top Foods Containing Selenium?
The best sources of selenium are protein-rich foods. Here’s a list of the top foods containing selenium, ideal for adding to your diet for optimal health:
What specific foods are richest in selenium?
The richest dietary sources of selenium include:
Food | Serving Size | Selenium Content (mcg) | Percent Daily Value (DV) |
---|---|---|---|
Brazil Nuts | 1 ounce (6-8 nuts) | 544 | 989 |
Yellowfin Tuna (Cooked) | 3 ounces | 92 | 167 |
Sardines (Canned) | 3 ounces | 45 | 82 |
Shrimp (Cooked) | 3 ounces | 42 | 76 |
Pork Chop (Broiled) | 3 ounces | 37 | 67 |
Beef Steak (Roasted) | 3 ounces | 37 | 67 |
Spaghetti (Cooked) | 1 cup | 33 | 60 |
Beef Liver (Pan-Fried) | 3 ounces | 28 | 51 |
Turkey (Roasted) | 3 ounces | 26 | 47 |
Ham (Roasted) | 3 ounces | 24 | 44 |
Cod (Cooked) | 3 ounces | 24 | 44 |
Chicken (Roasted) | 3 ounces | 22 | 40 |
Cottage Cheese (Low Fat) | 1 cup | 20 | 36 |



These foods can significantly boost your selenium intake and support overall health.
Are there plant-based foods that contain selenium?
Yes, there are several plant-based foods that contain selenium, although the selenium content can vary depending on the soil in which they are grown. Some good plant-based sources of selenium include:
- Brazil Nuts: Brazil nuts are one of the richest plant-based sources of selenium. Just one ounce (about 6-8 nuts) can provide well over 100% of the daily recommended intake.
- Sunflower Seeds: Sunflower seeds are a good source of selenium, as well as other nutrients like vitamin E and magnesium.
- Mushrooms: Certain types of mushrooms, such as shiitake, cremini, and white button mushrooms, contain selenium. The amount can vary based on the growing conditions.
- Whole Grains: Whole grains like brown rice, oatmeal, and whole-wheat bread can contribute to your selenium intake.
- Legumes: Legumes like lentils, chickpeas, and beans contain selenium.
- Spinach: Spinach is another vegetable that provides selenium, along with other vitamins and minerals.
- Broccoli: Broccoli can offer a moderate amount of selenium, depending on the soil quality.
- Onions and Garlic: These vegetables can provide selenium and also offer additional health benefits.
Including a variety of these foods containing selenium in your diet can help ensure you meet your daily selenium requirements, especially if you follow a vegetarian or vegan diet.
3. How Does Selenium Benefit Your Immune System?
Selenium is a powerful immune booster. It enhances the function of immune cells, helping your body fight off infections and diseases more effectively. Including foods containing selenium in your diet is a simple way to strengthen your body’s defenses.
In what ways does selenium enhance immune function?
Selenium enhances immune function through several key mechanisms:
- Enhancing Immune Cell Activity: Selenium supports the activity of immune cells such as T cells, B cells, and natural killer (NK) cells. These cells are crucial for identifying and eliminating pathogens, such as viruses and bacteria.
- Modulating Inflammatory Responses: Selenium helps regulate inflammatory responses in the body. By balancing the production of pro-inflammatory and anti-inflammatory molecules, selenium ensures that the immune system responds appropriately to threats without causing excessive damage to tissues.
- Antioxidant Protection: As an antioxidant, selenium protects immune cells from oxidative stress caused by free radicals. This protection is vital because oxidative stress can impair immune cell function and lead to chronic inflammation.
- Supporting Selenoprotein Function: Selenium is incorporated into selenoproteins, which play diverse roles in immune function. For example, glutathione peroxidases, a family of selenoproteins, protect immune cells from oxidative damage and support their ability to function effectively.
- Enhancing Antibody Production: Adequate selenium levels are associated with improved antibody production in response to vaccines and infections. Antibodies are proteins that recognize and neutralize pathogens, providing long-term immunity.
- Reducing Viral Load: Some studies suggest that selenium may help reduce viral load in individuals with viral infections. By supporting immune function, selenium can help the body control viral replication and spread.
Can selenium supplementation reduce the risk of infections?
Research suggests selenium supplementation can reduce the risk of certain infections, particularly in individuals with selenium deficiency. A 2018 systematic review and meta-analysis of 41 studies found that selenium supplements (doses not indicated) reduce the risk of Keshan Disease by 86%.
In addition, selenium supplementation has shown promise in reducing the risk of infections in specific populations:
- HIV Patients: Studies have found that selenium supplementation may improve immune function and reduce the risk of disease progression in people living with HIV, particularly in those with selenium deficiency.
- Post-Surgical Patients: Some research suggests that selenium supplementation may reduce the risk of infections and improve outcomes in patients undergoing surgery.
- Elderly Individuals: Selenium supplementation may enhance immune function and reduce the risk of respiratory infections in elderly individuals, who are often more susceptible to infections.
However, it’s important to note that the effectiveness of selenium supplementation in reducing the risk of infections can depend on several factors, including the individual’s selenium status, the type of infection, and the dosage and duration of supplementation.
4. How Does Selenium Promote Thyroid Health?
Selenium is essential for thyroid hormone production and metabolism. It helps convert inactive T4 into active T3, the hormone that regulates metabolism. Including foods containing selenium in your diet supports optimal thyroid function.
What is the role of selenium in thyroid hormone metabolism?
Selenium is crucial for thyroid hormone metabolism due to its role in the production and function of selenoproteins, which are essential for the synthesis and conversion of thyroid hormones. Key functions of selenium in thyroid hormone metabolism include:
- Conversion of T4 to T3: Selenium is a component of the enzyme iodothyronine deiodinase, which is responsible for converting thyroxine (T4), the inactive form of thyroid hormone, into triiodothyronine (T3), the active form. This conversion is essential for thyroid hormone to exert its effects on metabolism.
- Antioxidant Protection of the Thyroid Gland: The thyroid gland produces hydrogen peroxide (H2O2) during thyroid hormone synthesis, which can cause oxidative stress. Selenium is a component of glutathione peroxidase, an enzyme that neutralizes hydrogen peroxide, protecting the thyroid gland from damage.
- Regulation of Thyroid Hormone Synthesis: Selenium helps regulate the production of thyroid hormones by influencing the expression of genes involved in thyroid hormone synthesis. This ensures that the thyroid gland produces the right amount of hormones to meet the body’s needs.
- Protection Against Autoimmune Thyroid Disease: Selenium has been shown to have a protective effect against autoimmune thyroid diseases, such as Hashimoto’s thyroiditis and Graves’ disease. By modulating immune function and reducing oxidative stress, selenium helps prevent the destruction of thyroid tissue by the immune system.
Can selenium deficiency affect thyroid function?
Yes, selenium deficiency can significantly affect thyroid function. Selenium is essential for the proper functioning of the thyroid gland, and inadequate levels can lead to several problems:
- Impaired Hormone Production: Selenium is required for the enzymes that convert thyroxine (T4) to triiodothyronine (T3), the active form of thyroid hormone. A deficiency can reduce the conversion, leading to lower levels of T3, which can result in symptoms of hypothyroidism such as fatigue, weight gain, and cognitive impairment.
- Increased Risk of Thyroid Disorders: Selenium deficiency is associated with an increased risk of autoimmune thyroid diseases, such as Hashimoto’s thyroiditis and Graves’ disease. These conditions can cause inflammation and damage to the thyroid gland, further impairing its function.
- Exacerbation of Iodine Deficiency: Selenium and iodine work together to support thyroid health. A selenium deficiency can exacerbate the effects of iodine deficiency, potentially leading to more severe thyroid dysfunction.
- Oxidative Damage: Selenium is a component of glutathione peroxidase, an enzyme that protects the thyroid gland from oxidative damage. A deficiency can leave the thyroid gland vulnerable to damage from free radicals produced during hormone synthesis.
Ensuring adequate selenium intake through foods containing selenium or supplementation is important for maintaining optimal thyroid function and preventing thyroid-related health issues.
5. What Are the Benefits of Selenium for Heart Health?
Selenium helps reduce inflammation and prevent lipid oxidation, contributing to better heart health. Including foods containing selenium in your diet can lower the risk of cardiovascular disease and improve overall heart function.
How does selenium contribute to cardiovascular health?
Selenium contributes to cardiovascular health through several mechanisms:
- Antioxidant Properties: Selenium is a component of glutathione peroxidase, an enzyme that helps protect cells from oxidative damage caused by free radicals. By reducing oxidative stress, selenium helps prevent the oxidation of LDL cholesterol, a key factor in the development of atherosclerosis (the buildup of plaque in the arteries).
- Anti-Inflammatory Effects: Selenium helps reduce inflammation in the body by modulating the production of inflammatory molecules. Chronic inflammation is a major contributor to cardiovascular disease, so reducing inflammation can help protect against heart problems.
- Prevention of Platelet Aggregation: Selenium helps prevent the aggregation of platelets, which can lead to the formation of blood clots. By reducing platelet aggregation, selenium lowers the risk of heart attack and stroke.
- Support for Endothelial Function: Selenium supports the health of the endothelium, the inner lining of blood vessels. A healthy endothelium is important for regulating blood pressure, preventing blood clots, and maintaining overall cardiovascular function.
- Lipid Metabolism: Some studies suggest that selenium may help improve lipid metabolism by lowering total and non-HDL cholesterol levels.
Can selenium supplementation lower the risk of heart disease?
Clinical trial evidence does not consistently support the use of selenium supplementation for reducing the risk of heart disease, particularly in healthy people who obtain sufficient selenium from food.
- Mixed Trial Results: Some early observational studies suggested that low selenium status might increase the risk of cardiovascular disease. However, more recent epidemiological studies have yielded conflicting findings. For example, one study reported that higher plasma selenium concentrations were associated with higher total and non-HDL cholesterol levels.
- SELECT Trial: The Selenium and Vitamin E Cancer Prevention Trial (SELECT) assessed cardiovascular risk as a secondary outcome in well-nourished men and found no effect of 200 mcg/day selenium on the risk of cardiovascular events compared with placebo.
- Cochrane Review: A Cochrane Review of SELECT and 11 other smaller randomized trials found that selenium supplements did not reduce the risk of fatal and nonfatal cardiovascular events.
However, some studies suggest that including selenium in antioxidant mixtures may reduce the risk of cardiovascular mortality. A meta-analysis and systematic review found that cardiovascular mortality was reduced by 23% in participants taking antioxidant formulas containing selenium, compared with those who took antioxidant formulas that did not contain selenium.
6. How Can Selenium Support Cognitive Function?
Selenium’s antioxidant and anti-inflammatory properties are beneficial for brain health. It helps protect against cognitive decline and supports overall cognitive function. Include foods containing selenium in your diet to keep your mind sharp.
What mechanisms link selenium to improved cognitive function?
Selenium’s role in cognitive function is linked to several key mechanisms:
- Antioxidant Protection: Selenium is a component of glutathione peroxidase, an enzyme that helps protect brain cells from oxidative damage caused by free radicals. Oxidative stress is implicated in age-related cognitive decline and neurodegenerative diseases like Alzheimer’s.
- Anti-Inflammatory Properties: Selenium helps reduce inflammation in the brain by modulating the production of inflammatory molecules. Chronic inflammation can impair cognitive function and contribute to neurodegenerative processes.
- Support for Selenoprotein Function: Selenium is incorporated into selenoproteins, which play diverse roles in brain health. These proteins help maintain the integrity and function of brain cells, supporting optimal cognitive performance.
- Modulation of Neurotransmitters: Some studies suggest that selenium may influence the levels and activity of neurotransmitters, which are chemicals that transmit signals between nerve cells in the brain.
- Protection Against Heavy Metals: Selenium can help protect the brain against the toxic effects of heavy metals like mercury.
- Association with Higher Cognitive Scores: An analysis of NHANES data showed that higher whole blood selenium concentrations and higher selenium intakes were associated with higher cognitive scores in older adults.
Do studies support the use of selenium to prevent cognitive decline?
Clinical evidence does not strongly support the use of selenium supplementation in replete individuals for reducing the risk of cognitive decline and dementia in older adults.
- Mixed Observational Study Results: Results from observational studies have been mixed. While some studies have shown that lower plasma selenium concentrations are associated with subtle neurological impairments, others have found no association between plasma selenium concentrations and cognitive outcomes.
- PREADVISE Trial: The Prevention of Alzheimer’s Disease with Vitamin E and Selenium (PREADVISE) trial found no difference in the incidence of new Alzheimer’s disease or dementia among participants taking selenium, vitamin E, or both, compared with placebo.
- Meta-Analysis of Clinical Trials: A systematic review and meta-analysis of 11 clinical trials evaluated the effects of supplements containing selenium only or selenium plus other nutrients in adults with mild cognitive impairment or Alzheimer’s disease. The results showed that selenium-only supplements at various doses and selenium plus other nutrient supplements did not improve cognitive test scores.
7. What Role Does Selenium Play in Male Fertility?
Selenium is vital for sperm health and motility. Adequate selenium intake can improve sperm quality and enhance male fertility. Adding foods containing selenium to your diet is a natural way to support reproductive health.
How does selenium influence sperm quality and male fertility?
Selenium plays a vital role in sperm quality and male fertility through several mechanisms:
- Antioxidant Protection: Selenium is a component of glutathione peroxidase, an enzyme that helps protect sperm cells from oxidative damage caused by free radicals. Oxidative stress can impair sperm motility, DNA integrity, and overall function.
- Structural Component of Sperm: The selenoprotein phospholipid hydroperoxide glutathione peroxidase (PHGPx) is a major constituent and structural component of mature sperm. It helps maintain the structural integrity of sperm cells and protects them from oxidative damage.
- Sperm Motility: Selenium is essential for sperm motility, which is the ability of sperm cells to swim properly. Adequate selenium levels are associated with improved sperm motility, increasing the chances of fertilization.
- Sperm Morphology: Selenium helps maintain normal sperm morphology, which refers to the shape and structure of sperm cells. Abnormal sperm morphology can impair their ability to fertilize an egg.
- Hormone Production: Selenium is involved in the production of testosterone, which is the primary male sex hormone. Adequate testosterone levels are important for sperm production and overall reproductive function.
- Selenium Semen Concentrations: A 5-year prospective study in idiopathic infertile men found that both low and high selenium semen concentrations were associated with male infertility and reproductive failures.
Do selenium supplements improve sperm parameters in infertile men?
Clinical trials evaluating the effects of selenium supplementation on sperm parameters in infertile men have yielded conflicting findings.
- Mixed Trial Results: Some trials have found that selenium supplementation can improve sperm motility and chance of conception in men with reduced sperm motility and low selenium plasma concentrations. Another trial reported increases in total and progressive sperm motility in men taking selenium.
- Inconclusive Evidence: Other trials have found no differences in sperm concentration or motility between groups taking selenium supplements and those taking a placebo.
More research is needed to determine whether selenium supplements consistently improve sperm parameters and enhance male fertility. Factors such as baseline selenium status, dosage, duration of supplementation, and the presence of other nutrients may influence the effects of selenium on sperm quality.
8. What are the Symptoms of Selenium Deficiency?
Selenium deficiency is rare in the United States but can cause health problems. Symptoms include muscle weakness, fatigue, and impaired immune function. Ensure you’re getting enough foods containing selenium to avoid these issues.
What are the primary health consequences of selenium deficiency?
Selenium deficiency can lead to several significant health consequences:
- Keshan Disease: This is an endemic cardiomyopathy (disease of the heart muscle) that was first identified in regions with low selenium levels, such as parts of China. It primarily affects women of childbearing age and preschool children. Although prevalence is low today, the disease still exists.
- Kashin-Beck Disease: This is a type of osteoarthritis that commonly presents in childhood and puberty and occurs in certain low-selenium and low-iodine areas of China, Tibet, Siberia, and North Korea.
- Impaired Thyroid Function: Selenium deficiency can exacerbate iodine deficiency, potentially increasing the risk of congenital hypothyroidism in infants. It can also lead to endemic myxedematous hypothyroidism, a disease that occurs in regions with very low selenium levels and results in insufficient thyroid hormone production.
- Weakened Immune System: Selenium is important for immune function, and a deficiency can impair the activity of immune cells, increasing susceptibility to infections.
- Muscle Weakness and Fatigue: Selenium deficiency can cause muscle weakness and fatigue due to its role in muscle function and antioxidant defense.
- Reproductive Issues: Selenium is important for both male and female reproductive health, and a deficiency can lead to infertility and other reproductive problems.
Who is most at risk of selenium deficiency?
Several groups are at higher risk of selenium deficiency due to various factors:
- People Living in Selenium-Deficient Regions: Those whose diet consists primarily of vegetables grown in low-selenium areas are at risk. The lowest selenium intakes are in certain parts of China, where the population has a primarily vegetarian diet and soil selenium levels are very low. Average selenium intakes are also low in some European countries, especially among populations consuming vegan diets.
- People Undergoing Kidney Dialysis: Selenium concentrations are often significantly lower in patients undergoing long-term hemodialysis because hemodialysis removes some selenium from the blood. In addition, these patients are at risk of low dietary selenium intakes due to anorexia resulting from uremia and dietary restrictions.
- People Living with HIV: People living with HIV often have low selenium concentrations, possibly due to malabsorption or inadequate selenium intakes. The prevalence of selenium deficiency in people living with HIV varies by country, reflecting the variable selenium content of the soil.
- Individuals with Gastrointestinal Disorders: Conditions that impair nutrient absorption, such as Crohn’s disease and ulcerative colitis, can increase the risk of selenium deficiency.
- Elderly Individuals: Selenium status tends to decline with age, possibly due to reduced dietary intake or impaired absorption.
9. What is the Recommended Daily Intake of Selenium?
The Recommended Dietary Allowance (RDA) for selenium varies by age and life stage. For adults, it’s 55 mcg per day. Pregnant and breastfeeding women need slightly more, at 60 mcg and 70 mcg per day, respectively. Ensure your diet includes foods containing selenium to meet these needs.
What are the specific RDA values for different age groups?
The specific Recommended Dietary Allowances (RDAs) for selenium are as follows:
Age Group | RDA (mcg/day) |
---|---|
Infants (0-6 months) | 15 (AI) |
Infants (7-12 months) | 20 (AI) |
Children (1-3 years) | 20 |
Children (4-8 years) | 30 |
Children (9-13 years) | 40 |
Adolescents (14-18 years) | 55 |
Adults (19+ years) | 55 |
Pregnant Women | 60 |
Breastfeeding Women | 70 |
These RDAs are designed to meet the nutrient requirements of nearly all (97%–98%) healthy individuals in each age group. For infants, Adequate Intakes (AIs) are established when evidence is insufficient to develop an RDA.
Is it possible to consume too much selenium?
Yes, it is possible to consume too much selenium, which can lead to adverse health effects. Chronically high intakes of selenium, whether from food or supplements, can result in selenosis, a condition characterized by several symptoms.
- Upper Tolerable Intake Level (UL): The Food and Nutrition Board (FNB) at the National Academies of Sciences, Engineering, and Medicine has established Tolerable Upper Intake Levels (ULs) for selenium to prevent adverse health effects.
- UL for Adults: The UL for selenium in adults is 400 mcg per day from all sources (food and supplements).
- Symptoms of Excess Intake: Early indicators of excess selenium intake include a garlic odor in the breath and a metallic taste in the mouth. The most common clinical signs of chronically high selenium intakes, or selenosis, are hair loss and nail brittleness or loss. Other signs and symptoms include skin rash, nausea, diarrhea, fatigue, irritability, and nervous system abnormalities.
- Acute Selenium Toxicity: Acute selenium toxicity can cause severe gastrointestinal and neurological symptoms, acute respiratory distress syndrome, myocardial infarction, hair loss, muscle tenderness, tremors, lightheadedness, facial flushing, kidney failure, cardiac failure, and, in rare cases, death.
10. How Can You Incorporate More Selenium into Your Diet?
Incorporating foods containing selenium into your diet is easy. Add Brazil nuts to your snack rotation, include seafood in your weekly meals, and choose whole grains. Small changes can make a big difference in your selenium intake.
What are some simple ways to boost selenium intake through diet?
Here are some simple and effective ways to boost your selenium intake through your diet:
- Eat Brazil Nuts Regularly: Brazil nuts are one of the richest sources of selenium. Just 1-2 nuts per day can provide a significant amount of your daily selenium needs.
- Include Seafood in Your Diet: Fish and shellfish are excellent sources of selenium. Incorporate tuna, sardines, shrimp, cod, and salmon into your weekly meals.
- Choose Whole Grains: Opt for whole grains like brown rice, oatmeal, and whole-wheat bread over refined grains to increase your selenium intake.
- Add Selenium-Rich Vegetables: Include vegetables like spinach, broccoli, mushrooms, onions, and garlic in your meals to boost your selenium intake.
- Eat Eggs: Eggs are a good source of selenium. Incorporate them into your breakfast, lunch, or dinner.
- Add Turkey or Chicken to Your Meals: Poultry, such as turkey and chicken, can be a good source of selenium.
- Incorporate Legumes: Include legumes like lentils, chickpeas, and beans in your diet to contribute to your selenium intake.
Can cooking methods affect the selenium content of food?
Cooking methods can affect the selenium content of food, although the impact is generally minimal. Selenium is a mineral, so it is relatively stable during cooking compared to some vitamins, which can be more easily destroyed by heat. However, some selenium can be lost during cooking due to leaching into the cooking water.
To minimize selenium loss during cooking:
- Use Less Water: When boiling or steaming vegetables, use only the amount of water necessary to cook them. This reduces the amount of selenium that can leach into the water.
- Steam Instead of Boil: Steaming vegetables instead of boiling them helps retain more selenium because the food does not come into direct contact with large amounts of water.
- Use Cooking Liquids: If you boil foods, consider using the cooking liquid in soups or sauces to retain any selenium that may have leached out.
- Avoid Overcooking: Overcooking can cause nutrients to break down. Cook foods until they are just done to help retain their selenium content.
- Choose Appropriate Cooking Methods: Roasting, grilling, and baking generally retain more selenium than boiling because they don’t involve water.
Enjoy a variety of delicious and nutritious meals while ensuring you get enough selenium to support your overall health. At larosafoods.com, you’ll find a diverse range of recipes and cooking tips to help you create balanced and flavorful meals that are rich in essential nutrients like selenium.
FAQ About Foods Containing Selenium
What foods contain the most selenium?
Brazil nuts, tuna, and sardines contain the most selenium.
How does selenium benefit the body?
Selenium acts as an antioxidant, supports thyroid function, and boosts the immune system.
What is the recommended daily intake of selenium?
The RDA for adults is 55 mcg per day.
What happens if you don’t get enough selenium?
Selenium deficiency can lead to muscle weakness, fatigue, and impaired immune function.
Are selenium supplements safe?
Selenium supplements are generally safe when taken as directed, but high doses can be toxic.
How can I increase selenium in my diet?
Include foods like Brazil nuts, seafood, and whole grains in your diet.
Can cooking methods affect selenium content in food?
Yes, boiling can reduce selenium content due to leaching into the water.
What is selenosis?
Selenosis is a condition caused by consuming too much selenium, leading to symptoms like hair loss and nail brittleness.
Is selenium good for the thyroid?
Yes, selenium is essential for thyroid hormone production and metabolism.
Can selenium help with fertility?
Yes, selenium is important for sperm health and motility in men.
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