Iron is an essential mineral that plays a role in transporting oxygen throughout the body and supporting various biological processes. While iron can be obtained through the daily diet, supplements may also be used in certain situations. However, when it comes to iron intake, not only the amount consumed but also how well the body absorbs and uses iron is important. For this reason, foods that may affect iron absorption are among the topics frequently researched by people taking iron supplements.
Some foods and drinks included in the diet may support iron absorption, while others may affect the absorption process when consumed at the same time as iron. Therefore, paying attention to meal planning and the timing of certain foods may be useful when taking an iron supplement.¹
Iron absorption refers to the process by which iron obtained from food or supplements passes through the intestines and becomes available for the body to use. Not all of the iron consumed is absorbed. The amount absorbed may vary depending on a person's diet, the form of iron consumed and the other foods eaten alongside it.¹
Iron found in foods is generally divided into two forms:
Heme iron (from animal sources)
Non-heme iron (mainly from plant sources)
Heme iron is generally considered to have higher absorption, while the absorption of non-heme iron from plant foods can be more affected by other dietary components.²
Vitamin C is one of the nutrients most commonly associated with iron absorption. Research shows that vitamin C can improve the absorption of non-heme iron, particularly the form found in plant-based foods.³
Foods that contain vitamin C include:
Oranges
Mandarins
Kiwifruit
Strawberries
Lemons
Red peppers
Broccoli
For this reason, including sources of vitamin C alongside meals containing iron can be considered one dietary approach that may support iron absorption.³
Tea and coffee are among the drinks that can affect iron absorption because they contain polyphenols. In particular, consuming them at the same time as an iron supplement may affect the amount of iron absorbed by the body.¹
For this reason, some expert sources suggest that leaving a period of time between taking an iron supplement and drinking tea or coffee may be helpful for iron absorption.⁴
Calcium is another mineral that may affect iron absorption. In particular, consuming large amounts of calcium at the same time as an iron supplement may influence the absorption process.⁵
Examples of calcium-rich foods include:
Milk
Yoghurt
Cheese
Calcium-fortified drinks
Therefore, when taking an iron supplement, it may be useful to consider the timing of milk and dairy product consumption.⁵
Fibre-rich foods are an important part of a balanced diet. However, certain types of fibre and naturally occurring compounds called phytates can affect the absorption of iron.²
Foods containing phytates include:
Bran and wholegrain cereals
Pulses
Some seeds
Wholegrain products
This does not mean that these foods should be removed from the diet. The important point is to maintain variety in the diet and pay attention to the timing of iron supplementation.²
When eating meals containing iron or when taking an iron supplement, foods that contain vitamin C can be included in the diet.
These include:
Citrus fruits
Kiwifruit
Strawberries
Tomatoes
Red peppers
Broccoli
These foods naturally provide vitamin C and can form part of a varied and balanced diet.³
People taking iron supplements may generally benefit from paying attention to the following points:
Follow the directions for use provided on the product label
Take the supplement as recommended
Consider the timing of tea and coffee consumption
Avoid taking the supplement at the same time as calcium-rich foods or products where appropriate
Maintain a balanced and varied diet
As dietary habits and individual needs vary, personal circumstances should be taken into consideration when using supplements.¹
The quality of ingredients, manufacturing processes and overall reliability of a supplement are important factors to consider when choosing a product. For this reason, it may be useful to consider products obtained from reliable sources and manufactured with appropriate quality control processes.
People considering iron supplements can explore different products that suit their daily routines and individual needs. In this context, iron-containing products from İlaçsız Yaşam that have undergone quality control processes may also be considered among the available options.
Iron absorption does not depend solely on the amount of iron consumed. Certain foods and drinks consumed alongside iron can also influence this process. Foods containing vitamin C may support iron absorption, while tea, coffee and products containing high amounts of calcium may affect absorption.
For this reason, when taking an iron supplement, it is important to maintain a balanced and varied diet, consider the timing of meals and follow the recommended directions for use. A balanced diet that includes a variety of food groups remains an important part of an overall healthy eating pattern.
[1] National Institutes of Health, Office of Dietary Supplements. Iron – Fact Sheet for Health Professionals.
NIH ODS – Iron Fact Sheet for Health Professionals
[2] Harvard T.H. Chan School of Public Health. Iron – The Nutrition Source.
Harvard T.H. Chan School of Public Health – Iron
[3] National Institutes of Health, Office of Dietary Supplements. Vitamin C – Fact Sheet for Health Professionals.
NIH ODS – Vitamin C Fact Sheet for Health Professionals
[4] British Dietetic Association. Iron-Rich Foods and Iron Deficiency.
British Dietetic Association – Iron-Rich Foods and Iron Deficiency
[5] National Institutes of Health, Office of Dietary Supplements. Calcium – Fact Sheet for Health Professionals.
NIH ODS – Calcium Fact Sheet for Health Professionals
