Zinc During Pregnancy – 9 Critical Zinc Deficient Symptoms

During pregnancy, it’s vital you eat well to provide your body all the nutrients your baby needs to grow strong. The better the nutrition, the more it can support healthy fetal development and help you feel confident and at your best throughout your pregnancy.

Gestational zinc deficiency can have an adverse impact on pregnancy outcomes, increasing relative risks like preterm birth and prolonged labor, therefore taking zinc during pregnancy could be helpful.

The more you know about nutrition, the healthier your pregnancy will be, and you will be better equipped to make sure that both you and your baby are getting everything you need. Pregnancy is an ideal time to assess your diet and make positive changes to make sure you’re meeting your nutritional goals and protecting your future health and the health of your baby.

Pregnancy is associated with physiologic adjustments in the regulation of zinc homeostasis; these include changes in blood zinc levels, zinc absorption, placental transport, and tissue zinc storage to meet higher demands for zinc.

Zinc is a crucial essential mineral for the health of you and your developing baby. The trace mineral helps healthy fetal cell growth, DNA production and fetal brain development. It also supports a healthy immune system for both mother and baby.

Appropriate zinc intake during pregnancy is also associated with a child’s behavioural development, because of the key role zinc uptake plays in crucial neurodevelopmental events. What this means is that zinc transport is necessary for enzyme function, DNA synthesis and tissue growth, all of which are vital for immune function, wound healing and cell multiplication.

It’s very important to learn how much zinc you need to consume and what science says about zinc supplementation during pregnancy .

Introduction to zinc during pregnancy

Zinc (Zn) is an essential micronutrient that plays a pivotal role in supporting both maternal and fetal development during pregnancy. As a key nutrient, zinc plays an important role in numerous physiological processes, including cell growth, immune function and DNA synthesis.

During pregnancy, maintaining adequate zinc levels is especially important, as zinc deficiency has been identified as a significant risk factor for complications, such as fetal growth restrictions, low birth weight and preterm birth.

What can happen if you do not have enough zinc? How can making sure you have the proper zinc intake benefit both you and your baby? Knowing all the impacts of zinc deficiency and what can be done to address it is a crucial part of a healthy and happy pregnancy.

What is zinc?

Zinc is considered a trace element and an essential mineral for maintaining a healthy body. The body can’t produce zinc, so you need to be sure to get zinc through food or by taking supplements. You only need a small amount of zinc, and most people will consume enough through diet alone; in some cases, your doctor might advise zinc supplementation to make sure you hit your targets. If dietary intake is insufficient, oral zinc supplementation might be recommended as a practical way to address zinc deficiency during pregnancy.

What does zinc do?

Zinc supports a healthy immune system, aids wound healing, and helps to maintain your sense of taste and smell. Zinc supports a healthy pregnancy and infant outcomes by promoting normal fetal development and a strong maternal immune system.

During pregnancy, zinc is used for:

• Cell growth and division
• Fetal brain development
• The production and regulation of pregnancy hormones
• Immune function
• Wound healing.

During pregnancy there is an increased demand for zinc, due to the synthesis of zinc dependent enzymes and proteins that support fetal development and maternal health.

What are the benefits of zinc during pregnancy?

Zinc is essential for healthy fetal cell growth and DNA production. Zinc also plays a role in energy production and brain development, making it an essential mineral during pregnancy.

The World Health Organization states: ‘During pregnancy, zinc and other micronutrient deficiencies are common, due to increased nutrient requirements of the mother and the developing fetus. These deficiencies can negatively impact pregnancy results, including the health of the mother and newborn infant.’

Systematic reviews from the Cochrane Database of Systematic Reviews (CDSR) have evaluated the impact of zinc supplementation on pregnancy outcomes and support the evidence for its benefits. Adequate zinc intake during pregnancy has been associated with clinically relevant outcomes, such as reduced risk of preterm birth, birth weight and improved neonatal health.

The importance of zinc in pregnancy

During pregnancy, your baby is developing and growing quickly. This requires a lot of energy (no wonder you keep falling asleep on the couch) and you need to get enough zinc to boost energy production. Zinc deficiency might increase your baby’s risk of low birth weight and other potential complications.

When you are pregnant, your immune system is less effective in protecting your baby from an overzealous immune response or inflammatory reaction. Low zinc levels can compromise your immunity even further, making you more vulnerable during pregnancy. Low maternal zinc levels are associated with increased risk of complications for both mother and baby.

Relationship between zinc and infant outcomes

The hypnotoxic effect of zinc is vital to the health of expectant mothers, but it is also an important factor in the healthy development of babies. Research has shown a positive association between zinc status during pregnancy and important aspects of child development, including growth, immune system strength and neurological function. In fact, maintaining adequate zinc levels can help protect your baby from certain risks right from the start.

A systematic review published in the BMJ in April 2019 identified that zinc supplementation during pregnancy resulted in a significant reduction in preterm birth rates. This review was based on data from randomised controlled trials that compare zinc supplementation with placebos or no supplementation. The findings showed that zinc supplementation resulted in a 14% relative reduction in preterm births, highlighting the importance of zinc for both mothers and their babies. The studies reported a significant difference in preterm birth rates between the zinc group and the control group. The difference in outcomes was assessed by comparing intervention and control groups across multiple studies.

These findings underscore the value of monitoring zinc status during pregnancy and considering zinc supplementation when recommended by your healthcare provider.

What is the best way to consume zinc while pregnant?

When you’re pregnant, the best way to consume most nutrients is through the food you eat. Maintaining a proper balance of copper and zinc is important for fetal growth and birth outcomes. In fact, only folic acid and vitamin D need to be supplemented during pregnancy; you should be able to meet all your other nutritional targets through diet alone. Despite this, many women like to take a prenatal multivitamin for peace of mind.

Zinc rich foods for pregnant women

The best sources of dietary zinc are animal products, such as seafood, red meat, turkey, eggs and dairy products. Eating fortified cereals is another excellent way to incorporate zinc into your diet. Plant-based sources of zinc include oats, lentils, peanuts and kidney beans.

Plant-based foods, however, might also include high levels of phytate, which can inhibit zinc absorption. The best way to improve absorption is to ferment, soak or sprout the plant foods before eating them. If you eat a plant-based diet, choose a prenatal multivitamin that contains zinc.

Studies on serum zinc concentrations during pregnancy: overview

Several randomised controlled trials and other study designs have been conducted to assess the impact of zinc supplementation during pregnancy. The effects of zinc were assessed by comparing groups taking zinc with control groups; significant differences to no difference in maternal and neonatal end results have been reported. The health of neonates was a primary focus, with studies comparing maternal and neonatal zinc concentrations.

Some results were surprising, including benefits for behavioural development or childhood outcomes that were not anticipated. Measurements of serum zinc concentration and total serum zinc are the most frequent methods used to evaluate the status of pregnant women; high values are generally indicative of better outcomes. Four studies were conducted in high and low income areas, focused on pregnant women at risk of giving birth to small for gestational age infants. Research institutions like Oakland contributed supplementary data from other regions, such as Nigeria and the USA, to provide more balanced results.

All studies were independently assessed for objectivity and accuracy in the study selection. In many of these trials, investigators were unaware of group assignments, in order to minimize bias and accurately assess outcomes. The findings of these studies are presented in tables and, for each study, key features and results are listed. The expression of several genes in placental tissue was measured to understand the impact of zinc status. Changes in maternal blood volume (MZR) during pregnancy can affect zinc distribution and concentrations, which was considered in some studies.

All of the study subjects were followed for the occurrence of fever in neonates, results did not show a difference between zinc groups and control groups;

• A 2015 study published in Nature found that low serum zinc concentrations during pregnancy increased the risk of low birth weight
• A 2021 study published in Heliyon found that zinc supplementation during pregnancy could reduce rates of preterm birth
• A 2015 Cochrane review concluded the same, noting a 15% decrease in preterm birth after zinc supplementation. However, the researchers felt this could be due to poor nutrition in general and that work was needed to improve maternal nutrition globally.

How much zinc do you need during pregnancy?

During pregnancy, you need more zinc, which proves that this mineral is one not to be missed when you’re growing a baby.

The recommended zinc intake during pregnancy (mg per day) is as follows:

• Pregnant women aged 18 and under: 12 mg per day.
• Pregnant women aged 19 and over: 11 mg per day.

Maternal age has been studied as a factor influencing serum zinc concentrations during pregnancy, but research suggests that maternal age has little impact on zinc requirements.

Should pregnant women take zinc supplements?

Generally speaking, unless you have been advised to by your doctor, there is no need to take zinc supplements during pregnancy. However, zinc supplementation could be particularly important for women with low zinc status, as they are at greater risk of adverse pregnancy results. If your doctor thinks you are at risk of low zinc, it might be recommended you take zinc supplementation to make sure you and your baby benefit from the positive effects of zinc.

Maternal zinc intakes during pregnancy can usually be managed by diet alone. Be sure to eat a healthy, balanced diet that includes a variety of foods, so as to maintain a good dietary intake of essential vitamins and minerals. You can increase your zinc intake by consuming dietary sources of zinc, such as seafood, red meat and turkey. If you don’t eat animal products, opt for kidney beans, wholemeal bread and lentils.

Some prenatal supplements contain zinc, as well as other vitamins and minerals, such as folic acid; these are fine to take. Prenatal zinc supplements guarantee normal zinc levels throughout pregnancy and also enhance zinc levels in breast milk during lactation, according to a 2023 study published in Clinical Nutrition.

Can you have too much zinc in pregnancy?

Yes. It is possible to have too much zinc during pregnancy. Although zinc is essential for a good outcome of pregnancy, too much of it can be harmful. Zinc is generally safe when taken in the recommended amounts; therefore it’s important that you follow guidelines. It is crucial to avoid excessive consumption, which could lead to detrimental consequences on your health, even though evidence for some effects remain inconclusive.

Too much zinc can prevent the body from absorbing copper, which increases your risk of anaemia and weak bones. Negative effects of zinc overdose include nausea, vomiting and diarrhea.

How much zinc per day can a woman take?

It’s crucial not to exceed the upper limit for zinc during pregnancy. This is 34 mg for pregnant women who are 18 years of age or younger. The daily maximum for pregnant women who are 19 years of age or older is 40 mg. It’s vital to remember that these figures include zinc from food, which is why supplements contain a lot less zinc than the daily upper limit would allow.

Symptoms of zinc deficiency in pregnancy

Adverse pregnancy outcomes are associated with low zinc consumption. Zinc deficiency is linked to congenital abnormalities, poor birth outcomes, pregnancy loss, and fetal growth impairment, according to a 2022 study published in PLoS One. Low zinc intake is known to be a major contributing element in the complicated aetiology of fetal growth restriction (FGR). Although severe zinc deficiency is rare, it can have serious consequences for both mother and baby. Studies in rats have demonstrated that severe zinc deficiency during pregnancy can result in fetal death and congenital malformations, underscoring the importance of adequate zinc intake. Because of this, it’s critical to monitor your zinc levels throughout pregnancy in order to address zinc deficiency as soon as it occurs.

Potential symptoms of zinc deficiency are:

1. Appetite loss
2. Weight loss
3. Diarrhoea
4. Fatigue
5. Weak immune system
6. Hair loss
7. Skin rashes
8. Brittle nails
9. Problems with vision, taste, or smell.

See your healthcare providers for guidance if you think you could be suffering from a zinc shortage. They can investigate your symptoms, do tests and, if required, offer treatment.

Is zinc safe to take?

Most people don’t need to take zinc supplements because they’re able to get all the zinc they need by eating a varied diet high in zinc rich foods. Because zinc is essential for maintaining a healthy pregnancy, some prenatal supplements include it.

Can I take zinc while pregnant?

You might be wondering if taking prenatal vitamins during pregnancy is safe if you’ve seen that they include zinc. In general, taking zinc as part of your prenatal multivitamin is safe. As multivitamins often have a reduced zinc content, you might need to verify that the contents listed meet the recommended daily allowance (RDA) for pregnant women.

Most women don’t need zinc supplementation during pregnancy because they can get all the zinc they need through the food they eat. Speak to your doctor if you’re concerned about your zinc levels; you’ll be given advice about whether or not you need to take supplements during pregnancy.

What is zinc oxide?

Zinc and oxygen combine to form zinc oxide. It is often found in mineral sunscreens and is usually regarded as safe to use during pregnancy.

Because it has a direct effect on the health and development of the unborn child, zinc is an essential nutrient for expectant mothers during pregnancy. Pregnant women must keep an eye on their zinc levels, as low levels might raise the chance of negative outcomes, such as preterm birth and low birth weight. Adequate serum zinc concentrations are positively correlated with better pregnancy outcomes, according to the data that is currently available from clinical research and systematic reviews.

Healthcare professionals play a critical role in identifying women who are at risk and they will administer appropriate zinc supplements when needed. By using trustworthy resources and staying informed, mothers can take proactive steps to protect themselves and their babies from the risks associated with insufficient zinc. Additional research is required to identify the optimal approaches to increase zinc intake throughout pregnancy. The information that is now available, however, shows how important this sometimes overlooked mineral is for a healthy pregnancy and a good birth for all children.