How much caffeine for pregnant lady

Moderate daily caffeine intake during pregnancy may lead to smaller birth size

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Thursday, March 25, 2021

Pregnant women who consumed the caffeine equivalent of as little as half a cup of coffee a day on average had slightly smaller babies than pregnant women who did not consume caffeinated beverages, according to a study by researchers at the National Institutes of Health. The researchers found corresponding reductions in size and lean body mass for infants whose mothers consumed below the 200 milligrams of caffeine per day — about two cups of coffee — believed to increase risks to the fetus. Smaller birth size can place infants at higher risk of obesity, heart disease and diabetes later in life.

The researchers were led by Katherine L. Grantz, M.D., M.S., of the Division of Intramural Population Health Research at NIH’s Eunice Kennedy Shriver National Institute of Child Health and Human Development. The study appears in JAMA Network Open.

“Until we learn more, our results suggest it might be prudent to limit or forego caffeine-containing beverages during pregnancy,” Dr. Grantz said. “It’s also a good idea for women to consult their physicians about caffeine consumption during pregnancy.”

Previous studies have linked high caffeine consumption (more than 200 milligrams of caffeine per day) during pregnancy to infants being small for their gestational age (stage of pregnancy) or at risk for intrauterine growth restriction—being in the lowest 10th percentile for infants of the same gestational age. However, studies on moderate daily caffeine consumption (200 milligrams or less) during pregnancy have produced mixed results. Some have found similar elevated risks  for low birth weight and other poor birth outcomes, while others have found no such links. The current study authors noted that many of the earlier studies did not account for other factors that could influence infant birth size, such as variation in caffeine content of different beverages and maternal smoking during pregnancy.

For their study, the authors analyzed data on more than 2,000 racially and ethnically diverse women at 12 clinical sites who were enrolled from 8 to 13 weeks of pregnancy. The women were non-smokers and did not have any health problems before pregnancy. From weeks 10 to 13 of pregnancy, the women provided a blood sample that was later analyzed for caffeine and paraxanthine, a compound produced when caffeine is broken down in the body. The women also reported their daily consumption of caffeinated beverages (coffee, tea, soda and energy drinks) for the past week—once when they enrolled and periodically throughout their pregnancies.

Compared to infants born to women with no or minimal blood levels of caffeine, infants born to women who had the highest blood levels of caffeine at enrollment were an average of 84 grams lighter at birth (about 3 ounces), were .44 centimeters shorter (about .17 inches), and had head circumferences .28 centimeters smaller (about .11 inches).

Based on the women’s own estimates of the beverages they drank, women who consumed about 50 milligrams of caffeine a day (equivalent to a half cup of coffee) had infants 66 grams (about 2. 3 ounces) lighter than infants born to non-caffeine consumers. Similarly, infants born to the caffeine consumers also had thigh circumferences .32 centimeters smaller (about .13 inches).

The researchers noted that caffeine is believed to cause blood vessels in the uterus and placenta to constrict, which could reduce the blood supply to the fetus and inhibit growth. Similarly, researchers believe caffeine could potentially disrupt fetal stress hormones, putting infants at risk for rapid weight gain after birth and for later life obesity, heart disease and diabetes.

The authors concluded that their findings suggest that even moderate caffeine consumption may be associated with decreased growth of the fetus.

About the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD): NICHD leads research and training to understand human development, improve reproductive health, enhance the lives of children and adolescents, and optimize abilities for all. For more information, visit https://www.nichd.nih.gov.

About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit www.nih.gov.

NIH…Turning Discovery Into Health^®

References

Gleason, JL et al. Maternal caffeine consumption and metabolism and neonatal anthropometry in the NICHD Fetal Growth Studies. JAMA Network Open. 2021. doi:10.1001/jamanetworkopen.2021.3238

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Can pregnant women drink coffee? Learn about caffeine and pregnancy

Can pregnant women drink coffee? What about having other caffeinated beverages or foods? When it comes to caffeine and pregnancy, experts advise women to limit their intake to less than 200 milligrams per day, which is about one cup of coffee. It's a good idea to cut back on caffeine during pregnancy as much as you can, though, because even smaller amounts could affect your baby. Caffeine can add up fast in various foods and beverages, and different brands of coffee have very different amounts, so use our caffeine chart below to avoid getting too much.

Can pregnant women drink coffee?

The short answer is yes, pregnant women can drink coffee. However, it's important to watch your consumption of coffee, and caffeine overall, during pregnancy. Caffeine can affect your pregnancy and your baby in ways that aren't completely clear.

The American College of Obstetricians and Gynecologists (ACOG) advises pregnant women to limit their caffeine intake to less than 200 milligrams per day, which could be as little as one 8-ounce cup of coffee, depending on the brand. See the chart below to get an idea of how much caffeine is in different foods and drinks.

How much caffeine is safe during pregnancy?

Although the official recommendation is 200 mg or less a day, some experts believe that even moderate amounts of caffeine during pregnancy can introduce risks.

Previously, studies have linked high caffeine consumption (more than 200 mg a day) to babies being small for their gestational age or at risk for intrauterine growth restriction (IUGR). But researchers at the National Institutes of Health recently found that women who drank less than 200 mg of caffeine a day during pregnancy – as little as half a cup of coffee per day – had slightly smaller babies than non-caffeine drinkers.

Researchers noted that caffeine is believed to cause blood vessels in the uterus and placenta to constrict, which could reduce the blood supply to the fetus and inhibit growth. They also said that caffeine could potentially disrupt fetal stress hormones, putting infants at risk for rapid weight gain after birth and for obesity, heart disease and diabetes later in life.

However, other studies have found no link between moderate caffeine consumption in pregnancy (less than 200 mg a day) and problems such as low birth weight, IUGR, miscarriage, or premature birth. That's why moderate caffeine consumption during pregnancy gets the okay from most ob-gyns and midwives.

Still, because the research isn't settled, it's a good idea to limit your caffeine consumption as much as possible during pregnancy, and to stay within the recommended 200-mg-a-day limit.

Effects of caffeine during pregnancy

When you drink a cup of coffee, caffeine crosses the placenta into the amniotic fluid and your baby's bloodstream. While your body goes to work metabolizing and getting rid of the caffeine, your baby's body is still developing and takes a much longer time to process the caffeine. As a result, your baby is exposed to the effects of caffeine for much longer than you are.

Even if caffeine doesn't usually cause problems for you, you may find that it doesn't agree with you during pregnancy. It's a stimulant, so it can raise your heart rate and blood pressure. Plus, it can make you feel jittery and cause insomnia. Caffeine can exacerbate pregnancy issues like heartburn and frequent urination, too.

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The effects of caffeine may be more noticeable as your pregnancy progresses. That's because your body's ability to break down caffeine slows, so you end up with a higher level of it in your bloodstream. During the second trimester, it takes almost twice as long to clear caffeine from your body as when you're not pregnant. During the third trimester, it takes nearly three times as long. This can also mean that more caffeine crosses the placenta and reaches your baby, who can't process it efficiently.

There's one more reason to cut back on coffee and tea, whether it's caffeinated or not. These beverages contain compounds that make it harder for your body to absorb iron. This is important because many pregnant women are already low on iron. If you have coffee or tea, drink it between meals so it'll have less of an effect on your iron absorption.

Wondering when you can get back to enjoying your regular caffeine habit? It depends. Some caffeine can cross to your baby in breast milk, which is why it's also a good idea to limit caffeine if you're breastfeeding, especially for the first few months.

Which foods and beverages contain caffeine?

Caffeine is in a lot more things than just coffee, and the amount of caffeine varies widely among products, and even among brands. Pay attention to the kinds of foods and drinks you're having throughout the day (and how much of them) so you can be aware of how much caffeine you're really consuming.

To manage your caffeine intake, you'll need to be aware of all sources, like tea, soft drinks, energy drinks, chocolate, and coffee ice cream. Caffeine also shows up in herbal products and over-the-counter medications, including some headache, cold, and allergy remedies. Read labels carefully.

The amount of caffeine in a serving of coffee varies widely, depending on the type of bean, how it's roasted, how it's brewed – and, obviously, on the size of the cup. (Although espresso contains more caffeine per ounce, it's served in a tiny cup. So a full cup of brewed coffee will actually deliver more caffeine.)

Amount of caffeine in common foods and beverages

Soft drinks	Amount	Caffeine
Pepsi Zero Sugar	12 oz	69 mg
Mountain Dew	12 oz	54 mg
Diet Coke	12 oz	46 mg
Dr. Pepper	12 oz.	41 mg
Pepsi	12 oz	38 mg
Diet Pepsi	12 oz	36 mg
Coca-Cola Classic	12 oz	34 mg
Cherry Coke	12 oz.	34 mg
Barq's Root Beer	12 oz	22 mg
7-Up	12 oz	0 mg
Sierra Mist	12 oz	0 mg
Sprite	12 oz	0 mg

Ways to cut back on caffeine during pregnancy

While there are good reasons to cut back on caffeine during pregnancy, it's not always easy. Your desire for a morning cup of joe might evaporate during the first trimester when morning sickness strikes, only to return full-strength later in pregnancy. Or, you may always have a hankering for your usual caffeinated pick-me-ups. Consider some of these tips to help you have a low-caffeine pregnancy:

• Ease off gradually - If you're a devoted coffee lover, tea aficionado, or cola fan, caffeine withdrawal probably won't be easy. To lessen symptoms – which can include headaches, irritability, and lethargy – ease off gradually (but get under that 200-mg daily limit as soon as you can).
• Try mixtures for less caffeine - You may want to start by mixing decaf with your regular coffee, gradually increasing the ratio of decaffeinated to caffeinated. Or use more milk and less coffee. At home, try using a smaller amount of ground coffee (or tea leaves), or brewing for a shorter time. Letting a tea bag steep for just one minute instead of five reduces the caffeine by as much as half.
• Switch to decaf - Consider making the switch, at least for your second cup of coffee or tea. (Decaffeinated beverages may contain some caffeine, but it's usually a small amount.)
• Seek other sources of energy - Do your best to get plenty of sleep at night, go to bed early, and take rests throughout the day when you can. Eat well and exercise – even mild exercise can give you an energy boost.

Although herbal teas often have no caffeine, check with your healthcare provider before drinking them. A cup of peppermint or ginger tea is fine, but some herbal teas aren't safe for pregnancy.

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is it still possible or not?

June 16, 2022 12:23 Olga Muraya

There are a number of strict dietary restrictions during pregnancy, but it is not necessary to completely eliminate coffee from your daily diet.
Photo by Anna Civolani/Unsplash.

Researchers confirm that drinking coffee during pregnancy does not pose serious risks to the mother and her unborn child.

An international team of scientists has determined that daily coffee consumption does not increase the risk of preterm birth, miscarriage or stillbirth.

Researchers say that pregnant women can safely drink coffee at least every day without fear of side effects. But it is still necessary to limit its consumption to the recommended rate.

Recall that WHO recommends that pregnant women consume no more than 300 mg of caffeine per day. In the United States and some European countries, the maximum dose of caffeine is even less - 200 mg per day.

In general, these recommendations are equivalent to 1-3 cups of coffee per day, although the amount of caffeine in different coffee drinks can vary greatly.

Previous recommendations were based on observational studies. They make it difficult to separate coffee consumption from other risk factors such as smoking, alcohol or poor diet.

The authors of the new study wanted to find out whether coffee itself actually increases the risk of adverse pregnancy outcomes.

They relied on a study that confirmed that a certain set of genetic variants influences how much coffee we drink.

Of course, the researchers couldn't ask women to drink the prescribed amount of coffee during pregnancy to assess health risks. This would be highly unethical.

Instead, they used genetic analysis to mimic a randomized controlled trial. Let us explain that this is the highest quality standard of scientific work in the view of modern scientists.

The researchers used a method called Mendelian randomization. ( It is named after the eminent biologist Gregor Mendel. ) Scientists have studied whether eight genetic variants that predict how much a pregnant woman consumes coffee are also associated with birth outcomes.

As a result, genetic analysis showed that women who drank coffee did not have an increased risk of miscarriage, stillbirth or preterm birth.

The researchers emphasize that only certain adverse pregnancy outcomes were considered in their work, and it is possible that caffeine intake may affect some other important aspects of fetal development.

For this reason, scientists do not recommend that pregnant women drink more than three cups of coffee a day. They only made sure that a cup or two of flavored drink will not lead to serious problems during childbearing.

The study was published in the International Journal of Epidemiology on June 9, 2022.

Earlier, we talked about how many cups of coffee can lead to migraines, as well as which coffee raises cholesterol more.

More news from the world of science and medicine can be found in the sections "Science" and "Medicine" on the media platform "Looking".

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Coffee during pregnancy: a complete guide to all the do's and don'ts

When a woman sees "two lines" on her test, her life begins to change that same day. In this life, there are more good habits (timely sleep, proper nutrition, moderate exercise) and less bad habits (alcohol, smoking, sedentary lifestyle, unhealthy food). Coffee as a potentially dangerous product, around which there is a lot of controversy, often falls under the barrier of prohibitions.

Even without any pregnancy, coffee often raises a number of questions and concerns in people, so the debate around this drink is quite understandable and justified. But our task is to separate myth from reality and figure out when restrictions make sense and when they are a pointless obstacle to a fulfilling joyful lifestyle.

How does coffee affect the body of a pregnant woman?

Before talking about some special effect of coffee on a pregnant woman, let's refresh our memory of what actually happens to us when we drink coffee:

• After caffeine enters the blood, dopamine is released, which, as we remember, is responsible for a good mood. This hormone of joy very willingly “jumps out” in response to a shot of espresso or cappuccino and makes us feel good.
• Under the influence of dopamine, it is easier for us to play sports, we become more enduring and notice less muscle pain. It also improves overall performance.
• If there is too much caffeine (read - dopamine), the suppression of serotonin production begins. This leads to increased anxiety and can provoke depression.
• In parallel, under the influence of caffeine, adrenaline is released, another hormone that is responsible for our good mood and cheerfulness.
• Increased concentration.
• In most cases, coffee stimulates our heart to beat faster. The rhythm of the heartbeat accelerates and at the same time the pressure rises.
• The theophylline contained in coffee acts on the intercostal muscles and muscles of the diaphragm, as a result of which our breathing becomes more relaxed and easy.
• The excretory systems (diuretic and intestines) are stimulated – under the influence of caffeine, we feel the desire to visit the restroom faster.
• Caffeine also stimulates the nervous system. The peak of this action occurs in the first hour or two after drinking coffee, then for an average of 3-4 hours the breakdown of caffeine in the blood occurs, at which time many people have difficulty falling asleep.

What changes when a pregnant woman drinks coffee? In addition to the above phenomena, the following important parameters should be additionally indicated:

• slows down the process of removing caffeine from a woman's body;
• fetal heart rate increases;
• increased fetal activity;
• Excessive use creates possible risks for the child.

It is the last item on this list that is cause for concern and doubt about the admissibility of coffee in the diet of a pregnant woman. Below we describe in detail what these risks are and in what cases concerns can be justified.

Can pregnant women drink coffee?

Let's start with a high-profile peer-reviewed study published in the BMJ Evidence-Based Medicine. Professor Jack James from Reykjavik University in Iceland conducted a series of studies in 2020 and concluded that there is no safe level of caffeine intake for pregnant women: even the smallest amount can negatively affect the development of the fetus. However, Mr. James' colleagues from other countries categorically disagree with him. The National Health Service, the European Food Safety Authority, and the American and British Colleges of Obstetricians and Gynecologists recommend limit but not eliminate caffeine intake during pregnancy . The research paper was deemed "too panicky" and inconsistent with the accepted evidence.

“There are so many do's and don'ts associated with pregnancy, and the last thing we want to do is cause unnecessary worry. After all, women need to be sure that caffeine can be consumed in moderation during pregnancy,” says Dr. Luc Grzeskowiak, a pharmacist at the University of Adelaide in Australia.

Most doctors around the world agree that drinking up to 200 mg of caffeine per day (1-2 cups of coffee) is a completely acceptable limit that will not harm either mother or child.

When thinking about the amount of caffeine consumed per day, it is very important to remember that it is added not only from your cups of cappuccino, but also from other products (energy drinks, tea, cola, chocolate, cocoa).

The World Health Organization confirms that excess caffeine intake may be associated with problems (fetal growth restriction, low birth weight, preterm birth or stillbirth).

Is coffee allowed in early pregnancy (first trimester)?

The first trimester is the time when the foundation of the future life is laid, the most exciting and unpredictable. It is during this period that most miscarriages occur. And if we talk about coffee, then, according to studies, such miscarriages in the early stages are indeed more common in women who drink this drink often and a lot. However no one can say for sure whether high caffeine intake is a threat to the fetus or whether constant coffee consumption is a marker of a failed pregnancy (increased aversion to coffee, along with nausea and vomiting, is a feature of a healthy pregnancy).

Thus, we conclude that for a healthy woman with a healthy pregnancy, moderate coffee consumption is quite acceptable .

Can I drink coffee during the second trimester?

The second trimester is the calmest time for a future mother: by this moment the most dangerous milestones have been passed and there is no need to be afraid for the child's viability. Often it is during this period that all those strange and unexpected taste preferences of pregnant women fall, and coffee often becomes such an object of desire. If you do not have strict medical contraindications, you can continue to drink your favorite drink without any worries. The main thing is not to get carried away (remember about 200 mg of caffeine per day). To be completely calm, dilute coffee with milk. To minimize risks, doctors recommend drinking your coffee in the morning.

Is coffee allowed in late pregnancy (3rd trimester)?

The last trimester again increases the risk that the baby will leave the mother's body earlier than necessary, so if you are not sure about your health and the health of the fetus, it is better to reduce coffee consumption to a minimum at this time. Many studies indicate that in the third trimester of pregnancy, coffee had a negative effect on the condition of the child (premature birth, miscarriage). On the other hand, scientists tend to assume that mothers who drink a lot of coffee in late pregnancy also allow themselves other questionable products (alcohol, tobacco), and this greatly distorts the picture of research.

Benefits and harms of coffee for pregnant women

As we have already found out, many studies have shown that it is unwise to drink coffee (or in general any drink containing caffeine) during pregnancy in large quantities. Unfortunately, the publication of this information at one time gave rise to a lot of rewritten materials in which it was no longer possible to trace the connection with the original and see the important mention of the amount of caffeine. Meanwhile, in the case of coffee and pregnancy, the most important thing is not to overdo it (as, indeed, in many other areas of our lives).

Benefits of coffee during pregnancy

Coffee has many pleasant and beneficial effects that do not disappear when a pregnant woman drinks it. So, for example, coffee for pregnant women with low blood pressure might be a good idea. Thanks to the effect of caffeine, the pressure rises and the well-being of the expectant mother improves.

Coffee with milk will also benefit pregnant women: it is a good source of calcium, which is so necessary for the harmonious development of the child and maintaining the health of the mother. Latte is an ideal coffee drink during pregnancy: milk takes up more cup volume, which simultaneously reduces the effect of caffeine and replenishes calcium stores.

Coffee is an effective remedy against edema characteristic of pregnant women (diuretic effect).

Do not forget that it is useful for pregnant women to be in a good mood, and coffee certainly helps to lift it.

Harm of coffee during pregnancy

As we remember, there is a version that caffeine consumption during pregnancy can increase the likelihood of infertility, birth defects, miscarriage, stillbirth, premature birth and fetal growth retardation. However, this version is not sufficiently proven.

But we know for sure that coffee will be harmful to pregnant women who are prone to hypertension (high blood pressure) and tachycardia (rapid heartbeat), as well as to those who have a lack of calcium, potassium and phosphorus (caffeine does little to flush out these elements). Also, coffee is contraindicated in women with hypertonicity (additional stimulation with caffeine can really cause a miscarriage).

Another unpleasant consequence of taking coffee by pregnant women is additional stimulation of the excretory systems. Not a very pleasant thing, given that a woman in position already wants to go to the toilet more often than usual. However, any drink stimulates our kidneys to work more actively, so this is a controversial argument "against".

Which coffee is safer during pregnancy?

If you are not ready to give up coffee, but want to minimize the possible risks, it is worthwhile to figure out in advance which type of coffee is best for you.

Natural bean coffee

Classic coffee made from beans has the highest caffeine content, especially if the coffee is made in Turkish and the blend includes a high percentage of Robusta (this type of coffee has almost twice as much caffeine as Arabica). It is worth drinking no more than one cup a day, and also pay attention to the content of the blend (the ratio of robusta to arabica).

A standard cup of Americano (70 ml.), Espresso (30 ml.) or Cappuccino (180 ml.) contains about 50-70 mg of caffeine (they use the same amount of coffee - 1 shot).

Instant coffee

Instant coffee contains less caffeine in most cases than coffee beans. Doctors believe that a pregnant woman can afford up to two servings of such a drink. 1 teaspoon (without a slide) of instant coffee contains 30–50 mg of caffeine.

Decaffeinated coffee

Perhaps the safest option is for those who value fragrance and ritual more than the effect they produce. In decafe, caffeine is removed by 97-99%, which means that any risks are reduced to almost zero.

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