is it a trace element, vitamin, or mineral? Boron
trace element
is it difficult to measure? Boron
yes
what are its functions? Boron
formation of bones
what does it protect against? Boron
osteoporosis, arthritis
what are its recommended intakes? Boron
men 1.2 mg, women 1 mg
what are its four main food sources? Boron
peanut butter, wine, raisins, fruits
what the upper limit? Boron
20 mg