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Selenium in biology. Selenocysteine is the main organic molecule involving selenium in humans. Selenium is an essential micronutrient for animals, though it is toxic in large doses. In plants, it sometimes occurs in toxic amounts as forage, e.g. locoweed. Selenium is a component of the amino acids selenocysteine and selenomethionine.
The idea of humors in the human body reflected the four terrestrial elements: air, fire, earth, and water. The human body is composed of four essential substances (humors): yellow bile (fire), black bile (earth), blood (air), and phlegm (water). These humors have to be in equilibrium for our body to be in good health.
Selenium is a chemical element; it has the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. [9] It seldom occurs in its elemental state or as pure ore ...
Add fish to your brain health grocery list — fatty fish, that is. This includes: Herring. Mackerel. Salmon. Sardines. They’re all good sources of omega-3 fatty acids. There are actually three ...
Snails are a good source of selenium. Of the recommended daily requirement of selenium, the snail provides up to 50% (in women) and 30% (in men). Snail flesh is a good supply of essential amino acids such as lysine, methionine, and cysteine, which are difficult to get in other sources of protein, according to Adeyeye et al. (2020).
Here’s some food for thought: How you eat is linked to better brain function. New research finds that people who eat healthily throughout their lives are mentally sharper than their peers ...
Selenium is toxic in high concentrations. As sodium selenite, the chronic toxic dose for human beings was described as about 2.4 to 3 milligrams of selenium per day. In 2000, the US Institute of Medicine set the adult Tolerable upper intake levels (UL) for selenium from all sources - food, drinking water and dietary supplements - at 400 μg/day.
Selenomethionine (SeMet) is a naturally occurring amino acid. The L -selenomethionine enantiomer is the main form of selenium found in Brazil nuts, cereal grains, soybeans, and grassland legumes, while Se -methylselenocysteine, or its γ-glutamyl derivative, is the major form of selenium found in Astragalus, Allium, and Brassica species. [1]