Fe Metabolism:

Source:Liver , Meat, Cereals
1.5-2.0 mg/day

Absorption: upper intestine(duodenum and jejunum)
Active transport
Ferrous form

Distribution of Iron:TBI; 4-5 gm
Hb 60-70%
Myoglobin 3-5%
Haeme enzyme
Plasma iron 0.1%
Ferritin and Haemosiderin 25%

Blood iron form:Hb
Transferrin

Hb contains 2/3 of total iron
Diet contains 15-20 mg/day
10% absorbs
Anaemic person absorbs 20-30 of dietary iron
An average menstrual loss 30 mg per period

Factors influencing iron absorption:

Factors increased absorption:Ferrous
Haem Iron
Fasting
Increased Acidity
Low iron store
Ascorbic acid
Alcohol
Increased erythropoiesis
Pancreatic secretion stimulate absorption

Factors decrease absorption:Ferric iron
Non haem
Full stomach
Decreased gastric acidity
Iron overload
Phosphate