Quick Answer: What Is The Toxicity Of Selenium?

What level of selenium is toxic?

In the published reports reviewed herein, serum selenium concentrations span the following ranges: 400–30,000 μg/L associated with acute toxicity, 500–1400 μg/L associated with chronic toxicity, and <1400 μg/L free of toxicity; the category is determined by signs and symptoms in the patient..

Is it safe to take selenium everyday?

When taken by mouth: Selenium is LIKELY SAFE for most people when taken by mouth in doses less than 400 mcg daily, short-term. However, selenium is POSSIBLY UNSAFE when taken by mouth in high doses or for a long time. Taking doses above 400 mcg can increase the risk of developing selenium toxicity.

What food is high in selenium?

Pork, beef, turkey, chicken, fish, shellfish, and eggs contain high amounts of selenium. Some beans and nuts, especially Brazil nuts, contain selenium.

What are the symptoms of selenium deficiency?

What are the symptoms?infertility in men and women.muscle weakness.fatigue.mental fog.hair loss.weakened immune system.

How is selenium toxicity treated?

Treatment involves discontinuation of the source of excessive intake and supportive care. There is no known antidote or suitable chelator. In a published11 case of selenium poisoning, the patient took 10 tablets a day for 2 weeks following a loading dose of a supplement containing an unknown amount of selenium.

What causes high levels of selenium?

Causes of selenium toxicity Airborne exposure is rare, but occupational exposure is possible with the chemical processes for recovery of selenium, painting trades and the metal industries. Gun-bluing chemicals contain a high concentration of selenium and are often involved in acute poisoning.

Does selenium build up in the body?

Selenium can build up in the human body, however, if exposure levels are very high or if exposure occurs over a long time. The amount that builds up in the body depends on the chemical form of the selenium. It builds up mostly in the liver and kidneys but also in the blood, lungs, heart, and testes.

What is selenium good for in the body?

Selenium is a powerful mineral that is essential for the proper functioning of your body. It plays a critical role in metabolism and thyroid function and helps protect your body from damage caused by oxidative stress.

Can selenium toxicity be reversed?

Most of the toxic effects are reversible. Untreated acute/chronic toxicity may be fatal 4.

How much selenium should I take daily for thyroid?

A selenium supplement may be helpful, but don’t take more than 200 micrograms (mcg) per day , unless otherwise directed by your doctor. Zinc. Research also suggests that zinc supplementation may also help maintain healthy thyroid hormone levels.

Is Selenium good for hair?

Selenium has many benefits for hair, including: Selenium kills dandruff-causing fungus, which is why it’s an important ingredient in many dandruff treatments. Selenium is essential for the production of the thyroid hormones that help to regulate hair growth, says health author Mary Shomon.

How many Brazil nuts are safe to eat a day?

The safe upper intake level for selenium is 400 mcg. It’s important to limit your intake to 1–3 Brazil nuts per day or check how much selenium is in the nuts you buy.

Is Selenium toxic in high doses?

Taken at normal doses, selenium does not usually have side effects. An overdose of selenium may cause bad breath, fever, and nausea, as well as liver, kidney and heart problems and other symptoms. At high enough levels, selenium could cause death.

What are the signs of too much selenium?

Getting too much selenium over time can cause the following:Garlic breath.Nausea.Diarrhea.Skin rashes.Irritability.Metallic taste in the mouth.Brittle hair or nails.Loss of hair or nails.More items…•

Does selenium cause weight gain?

In previous studies of rats, selenium supplementation caused significant weight and body fat reduction. However, 2 small interventional studies in humans have reported contradictory results. One study of 11 men found that raising selenium intake increased weight gain.