The explanation â the true one (if ever found) â does matter. It may matter to future whales, potentially, especially if we learn that 52 Hertz (âAliceâ, as in Cooper) got the way s/he did because of us, because of something we humans were/are doing.
Because of this health risk with high iron intake, the Institute of Medicine has set a Tolerable Upper Intake Level, or UL, for iron. This is the highest amount of iron that can be taken daily with a low risk for developing overload. For males and females over 14 years old, the UL for iron is 45 milligrams per day.
For adults, the RDA for iron is 8 mg/day for men ages 19 and older, and women ages 51 and older. For women 19 to 50 years, the RDA is 18 mg/day. For pregnant women, the RDA is 27 mg/day. For breast-feeding women, the RDA is 10 mg/day for ages 14 to 18 years, and 9 mg/day for ages 19 to 50.