Iron absorption from the whole diet. Relation to meal composition, iron requirements and iron stores.

Objective: To validate a new method of measuring iron absorption from the whole diet over several days, to compare iron absorption from two types of diets and to relate iron absorption to iron requirements and iron stores.

Design: Iron absorption from two diets was studied in 21 healthy young women. All non-haem iron in all meals was labelled to the same specific activity with an extrinsic radio-labelled iron tracer.

Long-term treatment effects in children with ectopic eruption of the maxillary first permanent molars.

Forty-five out of forty-six children with irreversible ectopic eruption of at least one of the maxillary first permanent molars and treated with cervical headgear could be reached for a 10-year follow-up. The mean age at the start of treatment was 8.3 years (range 6.

Discriminant analysis in treatment evaluation of ectopic eruption of the maxillary first permanent molars.

The value of an analytical routine which could be used in the evaluation of clinical studies was assessed. Stepwise discriminant analysis with stepwise selection/elimination was used to reduce the amount of data without losing information before further analyses with canonical discriminant analysis. The purpose of canonical discriminant analysis was to reveal interactions between factors associated with the ectopic eruption of the first permanent molars.

Iron absorption from the whole diet: comparison of the effect of two different distributions of daily calcium intake.

The possibility of reducing calcium inhibition of iron absorption by decreasing calcium intake in lunch and dinner meals, which provided the most dietary iron, was examined in 21 healthy female volunteers. During a 10-d period, nonheme iron in all meals was extrinsically labeled with radioisotopic iron to a uniform specific activity. Iron absorption from two identical 10-d periods was compared when meals were labeled with two different iron radioisotopes and when the same amount of calcium (937 mg) was distributed in two ways, in either mainly breakfast and late evening meals or more evenly in all meals.

Duration of the inhibitory effect of calcium on non-haem iron absorption in man.

We investigated the duration of the inhibitory effect of calcium from milk and cheese (340 mg) in a breakfast meal on non-haem iron absorption from a hamburger meal eaten 2 or 4 h after the breakfast. The effect of calcium on iron absorption was studied in 21 human subjects by using paired observations and a dual-radioisotope method (55Fe and 59Fe). No duration effect of calcium on iron absorption was observed in this study.