Iron Absorption From Plant Heme Iron

Inclusion Criteria: * Serum ferritin \< 45 µg/L (iron depleted) * Body weight \< 70 kg * Body mass index 18,5 - 24,9 kg/m2 (normal weight) Exclusion Criteria: * Hb \< 120 g/L (anemia) * CRP \> 5 µg/L (inflammation) * Strict vegan and vegetarians * Any metabolic, gastrointestinal kidney or chronic disease * Consumption of mineral and vitamin supplements since screening and over the study period until last blood sample collection * Blood transfusion over the past 6 months * blood donation over the past 6 months * Significant blood loss (accident, surgery) over the past 6 months * Women who are pregnant or breast feeding * Smoker (\> 1 cigarette per week) * Continuous/long-term use of medication (except for contraceptives) * Therapeutic iron infusion over the past 6 months, * Known hypersensitivity or allergy to iron supplements, * Intention to become pregnant during the course of the studies, * Known or suspected non-compliance, drug or alcohol abuse, * Inability to follow the procedures of the studies, e.g. due to language problems, psychological disorders, dementia, etc. of the participant, * Participation in another study with investigational drug within the 30 days preceding and during the present studies, * Enrolment of the investigator, his/her family members, employees and other dependent persons