Orange juice and iron absorption

Pro Research Analysisby

Searched over 200M research papers

Analyzed relevant papers

Orange Juice, Ascorbic Acid, and Iron Absorption

Multiple studies show that orange juice, which is high in ascorbic acid (vitamin C), significantly increases the absorption of non-heme iron from foods and supplements. The ascorbic acid in orange juice helps convert iron into a form that is easier for the body to absorb, and this effect is much stronger than that of juices with little or no ascorbic acid, such as apple juice Balay2010Ballot1987Mehansho1989+2 MORE.

Orange Juice vs. Apple Juice for Iron Absorption

Research in both children and adults consistently finds that orange juice enhances iron absorption more than apple juice. In children, meals with orange juice led to higher iron absorption compared to meals with apple juice, especially when iron was provided as ferrous fumarate or in fortified foods Balay2010Ballot1987. However, some studies found that children still absorbed iron well from meals with either juice, suggesting that while orange juice is better, apple juice does not prevent iron absorption Shah2003Kemp2004.

Mechanisms: Role of Ascorbic and Citric Acid

The main reason orange juice boosts iron absorption is its high ascorbic acid content. Studies show a strong correlation between the ascorbic acid content of fruit juices and the amount of iron absorbed. Citric acid, also present in orange juice, further enhances this effect, especially when combined with ascorbic acid Ballot1987Mehansho1989. Other fruits and juices with low ascorbic acid, like apple juice, have little or no effect on iron absorption .

Iron Supplements and Orange Juice

Taking iron supplements with orange juice, rather than water or other drinks, results in much higher iron absorption. This is true for both children and adults, and especially important for groups at risk of iron deficiency, such as pregnant women. Studies in pregnant women show that taking iron tablets with orange juice leads to greater increases in hemoglobin levels compared to taking iron with water Triswanti2020Prihartini2016. The effect is attributed to the vitamin C in orange juice, which helps the body use the iron more efficiently.

Practical Implications: Meal and Supplement Timing

To maximize iron absorption, it is best to take iron supplements in the morning with orange juice and away from coffee or tea, which can inhibit iron absorption. Consuming iron with orange juice alone can result in up to four times more iron being absorbed compared to taking it with coffee or a full breakfast Von Siebenthal2023Hallberg1982.

Conclusion

Orange juice is a powerful enhancer of iron absorption due to its high ascorbic and citric acid content. It is more effective than apple juice and many other fruit juices. For people needing to improve their iron status, especially children and pregnant women, pairing iron-rich foods or supplements with orange juice is a simple and effective strategy to boost iron absorption and help prevent iron deficiency Balay2010Shah2003Ballot1987+5 MORE.

Sources and full results

Most relevant research papers on this topic

Orange But Not Apple Juice Enhances Ferrous Fumarate Absorption in Small Children

Orange juice enhances iron absorption from ferrous fumarate in small children, while apple juice does not, with a 2-fold increase in absorption in children older than 6.

RCTVery Rigorous Journal

2010·

20citations

·K. Balay et al.

Journal of Pediatric Gastroenterology and Nutrition·

DOI

Effect of orange and apple juices on iron absorption in children.

Apple juice and orange juice both enhance iron absorption in children, so a preference for apple juice does not pose a concern for iron-deficiency anemia.

RCT

2003·

31citations

·Malika Shah et al.

Archives of pediatrics & adolescent medicine·

DOI

The effects of fruit juices and fruits on the absorption of iron from a rice meal

Citrus fruit juices, especially orange and lemon juices, enhance iron absorption in a rice meal, while grapes, peaches, and avocado pear have little or no effect.

1987·

171citations

·D. Ballot et al.

British Journal of Nutrition·

DOI

Effect of juice on iron absorption in children

Drinking apple or orange juice with a meal does not significantly impact iron absorption in children with iron-deficiency anemia.

2004·

0citations

·C. Kemp

Calcium bioavailability and iron-calcium interaction in orange juice.

Orange juice improves calcium bioavailability and iron absorption, with citric acid and ascorbic acid promoting iron absorption without inhibiting calcium absorption.

1989·

22citations

·H. Mehansho et al.

Journal of the American College of Nutrition·

DOI

Effect of dietary factors and time of day on iron absorption from oral iron supplements in iron deficient women

Consuming iron supplements in the morning, away from meals or coffee, and with an ascorbic acid-rich food or beverage increases iron absorption by 4-fold in iron deficient women.

Non-Randomized Exp.

2023·

38citations

·Hanna K. von Siebenthal et al.

American Journal of Hematology·

DOI

Effect of different drinks on the absorption of non-heme iron from composite meals.

Orange juice significantly increases iron absorption, while tea and coffee reduce it, while milk, beer, and Coca-Cola have no significant effect.

Non-Randomized Exp.

1982·

151citations

·L. Hallberg et al.

Human nutrition. Applied nutrition

The Difference Of Effectiveness way to Consume Iron tablets toward haemoglobin level changes to pregnant women in second trimester at the Sindang Barang community health center in 2017

Taking iron tablets and drinking lemon juice together is more effective than taking iron tablets alone in increasing hemoglobin levels in second trimester pregnant women.

RCT

2020·

1citation

·Triswanti et al.

DOI

Absorption of non-haem iron from food during normal pregnancy

Increased iron absorption from food during normal pregnancy is large enough to meet increased requirements, provided dietary intake is adequate.

Cohort Study

1994·

169citations

·Jon F. R. Barrett et al.

BMJ·

DOI

THE EFFECT OF IRON TABLETS WITH SWEET ORANGE JUICE CONSUMPTION TO INCREASE HEMOGLOBIN LEVELS OF PREGNANT WOMENS

Consumption of iron tablets with sweet orange juice increases hemoglobin levels in pregnant women, facilitating iron absorption and preventing anemia in pregnancy.

Field Study

2016·

0citations

·Sabrina Dwi Prihartini

Try another search

collagen peptide supplementation

cancer incidence measurement methods

cardiac anatomy

famotidine onset of action

pantoprazole dosing time

combination therapy of famotidine and omeprazole