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Boron
Boron
Low concern
Boron is a trace element naturally present in fruits, vegetables, and nuts. NIH ODS reports no established RDA but a UL of 20 mg/day for adults; EFSA set a tolerable upper intake level of 10 mg/day for adults.
Found in
47 products
What it is
Trace mineral element; in food typically as borates from plant foods.
Trace mineral; some products fortified with boron-containing compounds in supplements.
Why it's flagged
- upper-intake limit applies
- reproductive toxicity at very high doses
What regulators actually say
"The Food and Nutrition Board... set a tolerable upper intake level (UL) for boron of 20 mg/day for adults."
"EFSA established a tolerable upper intake level (UL) for boron of 10 mg/day for adults."
Regulatory status
United States — FDA
No RDA; limits apply when sold as supplement under DSHEA.
European Union — EFSA
EFSA established UL of 10 mg/day boron for adults.
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