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For example, the US Adequate Intake recommendations from 1997 were 200 IU/day for infants, children, adults to age 50, and women during pregnancy or lactation, 400 IU/day for ages 51–70, and 600 IU/day for 71 and older. [168] Conversion: 1 μg (microgram) = 40 IU (international unit). [56]
Doses greater than 40 000 IU (1000 μg) per day are generally required before high blood calcium occurs. [12] Normal doses, 800–2000 IU per day, are safe in pregnancy. [5] Cholecalciferol was first described in 1936. [13] It is on the World Health Organization's List of Essential Medicines. [14]
During pregnancy, a woman's mass increases by about 12 kg (26 lb). [39] The European Food Safety Authority recommends an increase of 300 mL per day compared to the normal intake for non-pregnant women, taking the total adequate water intake (from food and fluids) to 2,300 mL, or approximately 1,850 mL/ day from fluids alone. [40]
Vitamin D3, aka cholecalciferol, is important for bone health and immune function. Experts discuss benefits, sources, risks and who needs a supplement. How to get the most out of vitamin D3
The recommended dietary allowance is 15 μg/d (600 IU per day; 800 IU for those over 70 years). Overdose has been observed at 1,925 μg/d (77,000 IU per day). [citation needed] Acute overdose requires between 15,000 μg/d (600,000 IU per day) and 42,000 μg/d (1,680,000 IU per day) over several days to months.
A clinical report indicated that serum 25(OH) D levels increased by an average of 57% over a 2-month to 3-month period in 17 clinic patients after they were instructed to take their usual dose of vitamin D with the largest meal of the day. [75] Another study conducted in 152 healthy men and women concluded that diets rich in monounsaturated ...
The recommended adequate intake of sodium is 1,500 milligrams (3.9 g salt) per day, and people over 50 need even less." [13] The Daily Value for potassium, 4,700 mg per day, was based on a study of men who were given 14.6 g of sodium chloride per day and treated with potassium supplements until the frequency of salt sensitivity was reduced to 20%.
A 2019 study published in JAMA Pediatrics, for example, found that IQ levels were slightly lower in 3- and 4-year-old children whose mothers had higher measures of fluoride in their urine when ...