Iron And Vitamin C For Pregnancy

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Vitamin C is needed to make collagen, one of the fibres that builds your baby’s body. So, it’s no surprise that your need increases during pregnancy. Fortunately, it’s easy to get an adequate supply from a diet that includes plenty of fruit and vegetables.

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Learn about the benefits of vitamin C in pregnancy, how it can help iron absorption and which foods are the best sources of vitamin C in this article.

Why is vitamin C so important during pregnancy?

Not only does it boost your immune system and reduce your risk of suffering from iron-deficiency anaemia in pregnancy, Vitamin C is key to your baby’s physical development too.

Vitamin C:

  • Aids in the production of collagen, which supports normal growth, healthy tissue and wound healing1
  • Supports your baby’s immune system2
  • Helps your baby to absorb iron and build up stores for later use2

How much vitamin C do you need when you’re pregnant?

The Reference Nutrient Intake (RNI) of vitamin C during pregnancy – the amount considered to be enough to meet most people’s needs – is 50mg per day, which is 25% more than you would normally need3. A 100g portion of strawberries contain 57mg. If you decide to breastfeed your baby, you shouldn’t need to make any dietary changes but it’s a good idea to eat healthily. You can always talk to your midwife or healthcare professional if you’d like more advice. 

Since it is a water-soluble vitamin, it isn’t stored by your body, which means a daily intake during pregnancy is essential. Fortunately, you can get all the vitamin C you need to support you and your baby by eating a healthy, balanced pregnancy diet that includes plenty of fruit and vegetables.

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Which foods contain Vitamin C?

Foods rich in vitamin C include broccoli, cauliflower, kale, kiwi fruit, citrus fruits, red, green or yellow pepper, sweet potatoes, strawberries and tomatoes.

Peppers contain over twice as much vitamin C as oranges. Peppers contain around 126mg per 100g whereas oranges only contain 52mg of vitamin C per 100g5.

The graph below shows the amount of vitamin C you get from different foods6:

Food Portion Average nutrient quantity (mcg)
Red peppers 100g 126
Broccoli (best raw or steamed) 100g 79
Strawberries 100g 57
Cabbage (green or white raw) 100g 45
Citrus fruit (oranges are the best) 100g 42-52
Orange juice 100g 40
Tomatoes (best cooked) 100g 30
Spinach 100g 30
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Steam and grill to boost your vitamin C intake

As with other water-soluble vitamins, the way you prepare and cook foods can affect the vitamin C content5.

Boiling can destroy some of the vitamin C within the foods you’re preparing. To retain as much nutrient quality as possible, it’s best to steam or grill your vegetables5. Or better still, eat them raw in salads.

Vitamin C boosts your iron absorption

Vitamin C helps the body absorb non-haem iron, the type found in plant sources such as spinach and chickpeas. Eating good sources of vitamin C with plant sources of iron during pregnancy can increase your daily intake considerably7. To get the most out of your diet, include fruit and iron sources within the same meal, whether it’s adding chopped fruit to a salad or having a whole fruit for dessert7.

An adequate intake of iron is essential to support your increased blood volume and reduce the risk of iron-deficiency anaemia, and to help build up your baby’s iron stores to support their learning and growth for the first 6 months of life2. Read more about the importance of iron in your pregnancy diet.

Iron is a key nutrient during pregnancy, and an important part of a balanced diet. It supports your baby’s developing brain and helps to maintain a healthy supply of oxygen in your blood. It also helps support the development of your baby’s immune system and helps to maintain your own health and wellbeing too. With so many roles to play for both you and your baby, your body uses more iron during pregnancy than usual.

Learn more about the importance of iron during your pregnancy, how much iron you need when you’re pregnant, and which foods can help to boost your intake.

Why is iron so important during pregnancy?

Iron has essential roles to play in your baby’s development and your own health. Not only does it support your baby’s rapidly developing brain, as well as their growing muscles1, it’s also needed to make haemoglobin, the protein in red blood cells that carries oxygen around your body and to your baby2.

Keeping your iron levels topped up can also prevent iron deficiency anaemia. It’s a condition in which your blood doesn’t contain enough red blood cells, which can leave you feeling tired, breathless and even affect your immune system.

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How much iron do you need when you’re pregnant?

The recommended daily intake for every woman, whether pregnant or not, is 14.8mg each day.

During pregnancy, your body uses more iron than usual. This is partly due to your increased blood supply, with more iron required to create and maintain a greater volume of blood cells.

Your baby’s demand for iron also rises as they grow. Added to this, your baby’s body starts accumulating iron stores in the third trimester of pregnancy, ready to support them during their first 6 months of life.

Surprisingly though, as long as you had good iron levels before conceiving, your recommended intake remains the same as if you weren’t pregnant. This is because without the loss of blood through monthly periods, you retain more of your body’s iron stores.

Your body also becomes more efficient at absorbing iron as pregnancy progresses – one of the amazing ways your body naturally adapts to the ever-changing demands of growing a new person1.

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What if I don’t get enough iron?

Mild iron deficiency can leave you feeling tired, lacking in energy and leave you looking pale and washed out.

A more severe case of iron deficiency can lead to iron deficiency anaemia, a condition where the blood doesn’t contain enough red blood cells for your body’s needs. This can cause symptoms including heart palpitations, brittle nails, thinning hair and mouth ulcers. Your immune system can also be affected, leaving you more vulnerable to infection and illness3.

Maintaining healthy iron levels during pregnancy on the other hand means you’re less likely to become anaemic4, in turn lowering the possible risks of premature birth, a low birth weight5 and low iron levels in your baby6.

Your midwife will check your iron levels regularly throughout your pregnancy. If your levels run low, they may suggest taking an iron supplement, and if you do develop anaemia, they will help you manage the condition to keep you and your baby healthy. It’s best not to take a supplement unless advised to do so by a healthcare professional.

Which foods contain iron?

Iron is available in a wide variety of foods and comes in two different forms.

Haem iron comes from animal-based sources, such as red meat. This type of iron is easily absorbed by your body. In fact, you absorb up to 30% of the haem iron that you consume.

The best sources include:

  • Meat, including beef, lamb and pork.
  • Poultry, Including chicken, turkey and duck.
  • Fish, including tuna, mackerel and sardines (no more than two portions per week).
  • Eggs (only eat eggs which carry the red lion mark while you’re pregnant).

Non-haem iron comes from plant-based sources, like pulses and dark leafy vegetables, which are important part of a nutritious, well-balanced diet. While non-haem iron is harder for your body to absorb, vitamin C helps your body absorb more of it. So when eating iron-rich plant-based food, up your intake by having a glass of orange juice or a piece of citrus fruit with it or for dessert.

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The best plant-based sources of iron include:

  • Pulses, such as lentils and chickpeas.
  • Nuts, such as pistachios, almonds and cashews.
  • Wholegrains such as wholemeal bread and iron-fortified breakfast cereals.
  • Dark, leafy vegetables, like spinach, kale and broccoli.
  • Dried fruit, like apricots, prunes and raisins.

Interestingly, the cookware you use may also affect the iron content of your food. Some research suggests that using cast iron pots and pans can help to increase your iron intake1.

Be aware that the tannins in tea and coffee can reduce the absorption of iron. So if you enjoy a hot drink after a meal, try choosing a pregnancy-safe fruit tea instead8.

Try to include a variety of iron-rich foods as part of your healthy, balanced pregnancy diet to ensure you’re getting an adequate intake.

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Iron for vegans and vegetarians

If you follow a vegan, plant-based or vegetarian diet, do include a wide variety of iron-rich foods and where possible combine them with foods which are rich in vitamin C to ensure you get the maximum intake of iron from your diet.

You also need to take care that you’re getting enough vitamin B12, proteincalcium, and omega-3 fatty acids in your diet. Vegans especially are likely to need to take a B12 supplement in order to get an adequate amount – ask your midwife for advice.

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