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Selenite, satin spar, desert rose, and gypsum flower are crystal habit varieties of the mineral gypsum.. All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate (meaning that it has two molecules of water), with the chemical formula CaSO 4 ·2H 2 O. Selenite contains no selenium, the similar names both derive from Greek selḗnē (σελήνη 'Moon').
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. [7] 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. [8]
Chosen for its selenium content and high solubility, sodium selenate is a common ingredient in over-the-counter vitamin supplements. Selenium is a trace essential element. Sodium selenate and selenite are also common in premix animal feed. Neither compound has demonstrated a difference in the amount of selenium absorbed.
If you don’t regularly get enough vitamin D through your diet, try 15 minutes of sun exposure a day, or consider popping a supplement to support your immune system.
Earlier this year, the U.S. Preventive Services Task Force issued updated guidance saying that vitamin, mineral and multivitamin supplements are unlikely to prevent cancer or heart disease, or to ...
8 Weight Loss Vitamins and Supplements to Boost Metabolism Most of the supplements that can be used as part of an effective weight loss routine are naturally occurring, meaning you can get them ...