Der Effekt von Kapselmaterial und anderen Mikronährstoffen auf Eisen Absorption von einem Eisen Fortifizierten Brot in Frauen mit Eisenmange.

Dietary Supplement: free FeSO4;Dietary Supplement: free FeSO4 and empty microspheres;Dietary Supplement: free FeSO4 and hylauronic acid;Dietary Supplement: free FeSO4 and eudragit polymer;Dietary Supplement: encapsulated FeSO4 3.2%;Dietary Supplement: encapsulated FeSO4 20%;Dietary Supplement: encapsulated FeSO4 3.2%, encapsulated Vitamin A;Dietary Supplement: encapsulated FeSO4 3.2%, encapsulated Vitamin A, free Folic Acid;Dietary Supplement: FeSO4 embedded in Hyaluronic acid

Inclusion Criteria:

- Female, 18 to 40 years old

- Marginal iron status (PF <25 ng/ml)

- Body weight < 65 kg

- Normal body Mass Index (18.5 - 25 kg/m2)

- Signed informed consent

Exclusion Criteria:

- Pregnancy (assessed by a pregnancy test) / intention to become pregnant

- Lactating up to 6 weeks before study initiation

- Moderate or severe anaemia (Hb < 9.0 g/dL)

- Elevated C reactive Protein (CRP) (> 5.0 mg/L)

- Any metabolic, gastrointestinal kidney or chronic disease such as diabetes, hepatitis,
hypertension, cancer or cardiovascular diseases (according to the participants own
statement)

- Continuous/long-term use of medication during the whole study (except for
contraceptives)

- Consumption of mineral and vitamin supplements within 2 weeks prior to 1st meal
administration

- Blood transfusion, blood donation or significant blood loss (accident, surgery) over
the past 4 months

- Earlier participation in a study using Fe stable isotopes or participation in any
clinical study within the last 30 days

- Participant who cannot be expected to comply with study protocol (e.g. not available
on certain study appointments or difficulties with blood sampling)