Tag: 18 year old

According to the National Institutes of Health, an 18-year-old female needs 15 milligrams (mg) of iron per day, while an 18-year-old male requires 11 mg. This significant difference in iron requirements is primarily due to the onset of menstruation in adolescent girls.

According to the Dietary Guidelines for Americans, an active 18-year-old male may require up to 3,200 calories per day, while a female needs up to 2,400. Determining exactly how many calories should I eat a day if I'm 18 depends heavily on individual factors, making a one-size-fits-all number insufficient.