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Selenium is a component of the amino acids selenocysteine and selenomethionine. In humans, selenium is a trace element nutrient that functions as cofactor for glutathione peroxidases and certain forms of thioredoxin reductase. [1] Selenium-containing proteins are produced from inorganic selenium via the intermediacy of selenophosphate (PSeO 3 3 ...
Analysis of blood levels of inorganic compounds in the supplement indicated the selenium concentrations were 10 to 15 times higher than normal in the blood samples and 15 to 20 times higher than normal in the liver samples. Selenium was later confirmed to be the toxic factor. [142]
Selenium deficiency occurs when an organism lacks the required levels of selenium, a critical nutrient in many species.Deficiency, although relatively rare in healthy well-nourished individuals, [1] can have significant negative results, [2] affecting the health of the heart and the nervous system; contributing to depression, anxiety, and dementia; and interfering with reproduction and gestation.
Winter brings less daylight and colder temperatures, which can disrupt sleep. Seasonal Affective Disorder (SAD) is more common in winter due to the lack of sunlight, causing sleep disturbances.
Iron deficiency anemia can intensify symptoms of fatigue and shortening of breath, and can cause cold sensitivity, hair loss, paleness to the skin and nail changes, says Cunningham. It has also ...
Getting a good night's sleep can be a little more challenging amid the hype of the holidays. With changes in routine, diet and potentially time zones, quality sleep could be difficult to come by ...
Patients on LT 4 monotherapy may have blood T 3 levels low or below the normal range, [74] [70] and/or may have local T 3 deficiency in some tissues. [82] Although both molecules can have biological effects, thyroxine (T 4) is considered the "storage form" of thyroid hormone, while tri-iodothyronine (T 3) is considered the active form used by ...
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