In addition to ensuring normal thyroid function, selenium can also improve the symptoms of patients with thyroid disease.
Hashimoto's thyroiditis is an autoimmune disease in which the thyroid tissue is gradually destroyed, leading to hypothyroidism and a series of symptoms such as fatigue, weight gain and feeling cold.
Some reviews have found that selenium supplementation can improve the immune function and mood of patients with Hashimoto's thyroiditis.
However, two other reviews concluded that there is insufficient evidence to determine the role of selenium in the treatment of this disease. Therefore, further research is needed ).
At the same time, Graves’ disease is a thyroid disease that produces too much thyroid hormones, leading to symptoms such as weight loss, weakness, sleep problems, and bulging eyes.
Studies have shown that selenium supplementation can improve thyroid function and delay the progression of certain symptoms in people with this disease. However, more research is needed ).
There are no studies investigating the use of Brazil nuts as a source of selenium, especially in patients with thyroiditis or Graves' disease. Nevertheless, including them in your diet may be a good way to ensure that your selenium content is adequate.
Brazil nuts are rich in antioxidants, which these substances helps to keep cells healthy. They do this by fighting the damage caused by reactive molecules called free radicals.
Brazil nuts contain a variety of antioxidants, including selenium, vitamin E, and phenols such as gallic acid and ellagic acid .
Selenium increases the levels of an enzyme called glutathione peroxidase (GPx), which helps reduce inflammation and protect your body from oxidative stress-the imbalance between antioxidants and free radicals Cause cell damage.
The anti-inflammatory effects of Brazil nuts can be achieved over a long period of time through single, large and small doses.
A study of 10 people pointed out that a single serving of 20 grams or 50 grams (4 or 10 nuts, respectively) can significantly reduce a variety of inflammatory markers, including interleukin 6 (IL-6) and tumor necrosis factor alpha (TNF). -α) (.
Another three-month study gave people receiving kidney failure treatment one Brazil nut a day. It turned out that their selenium and GPx levels were elevated, while inflammation markers and cholesterol levels were significantly reduced.
However, Follow-up studies have observed that once people stop eating Brazil nuts, these measurements will return to their original levels. This indicates that long-term diet changes are required to obtain the benefits of Brazil nuts.
Fatty Brazil nuts contain heart-healthy, such as polyunsaturated fat, and rich with antioxidants, minerals and fiber, all of which may help reduce the risk of heart disease .
A study of 10 healthy adults investigated the effect of eating Brazil nuts on cholesterol levels. It gave them 5, 20 or 50 grams of Brazil nuts or a placebo.
After 9 hours, compared with the group that received the lower dose, the group that received 20 or 50 grams had lower levels of LDL (bad) cholesterol and higher levels of HDL (good) cholesterol.
Another study analyzed the effect of Brazil nut consumption on obese people with selenium deficiency who are being treated for kidney disease.
Studies have found that consuming Brazil nuts containing 290 micrograms of selenium every day for 8 weeks significantly increases HDL cholesterol levels. Increasing your HDL cholesterol level may reduce your risk of heart disease ).
In addition, a 16-week study of obese adolescents observed that eating 15-25 grams of Brazil nuts a day can improve blood vessel function and reduce low-density lipoprotein cholesterol and triglyceride levels.
The effect of Brazil nuts on heart health is promising. However, you need to enter a further study to determine the optimal dose and what people might get the most benefit.
Brazil nuts contain ellagic acid and selenium, both of which are good for your brain.
Ellagic acid is a polyphenol in Brazil nuts. It has antioxidant and anti-inflammatory properties and may have protective and anti-depressant effects on your brain .
Selenium can also play a role in brain health as an antioxidant .
In one study, elderly people with mental disorders ate one Brazil nut a day for six months. In addition to increased selenium levels, they also showed improved language fluency and mental function .
Low selenium levels are associated with neurodegenerative diseases such as Alzheimer's and Parkinson's, so it is important to ensure adequate intake.
More importantly, some studies have shown that selenium supplementation may help regulate depression, which is significantly related to insufficient selenium intake. However, the results are conflicting and require further research .
Brazil nuts provide some impressive health benefits, but eating too much can be harmful.
In fact, ingestion of 5,000 micrograms of selenium (the content in approximately 50 average-sized Brazil nuts) can cause poisoning. This dangerous condition is called selenium poisoning and can cause breathing problems, heart attacks, and kidney failure.
In addition, too much selenium, especially selenium from supplements, can increase the risk of diabetes and prostate cancer.
However, communities in the Amazon region that have naturally higher levels of selenium in their traditional diets did not show any negative effects or signs of selenium poisoning.
Nevertheless, it is important to limit the daily intake of Brazil nuts.
The upper limit of adult selenium intake is 400 micrograms per day. For this reason, it is important not to eat too many Brazil nuts and check the selenium content in the nutrition label.
Limiting your intake of one to three Brazil nuts per day is a wise way to avoid excessive selenium intake.
In addition, people who are allergic to nuts may be allergic to Brazil nuts and need to avoid them.