How Safe Is Anise in Pregnancy?

The use of herbs during pregnancy can be a delicate matter. For expectant mothers considering star anise, it's crucial to distinguish between the safe, albeit limited, consumption of anise (Pimpinella anisum) and the potential hazards of star anise (Illicium verum). 

According to the American Pregnancy Association, moderate use of culinary herbs like anise is generally considered safe during pregnancy, yet essential oils and concentrated forms should be avoided due to their potency. 

Furthermore, the U.S. Food and Drug Administration advises caution with star anise, particularly Chinese star anise, which has been associated with cases of toxicity and should not be confused with the Japanese variety. For those with high-risk pregnancies, the avoidance of anise might be recommended to minimize the risk of premature labor, underscoring the importance of consulting healthcare providers for personalized advice.

Anise is a food ingredient used in a variety of things to add a slightly licorice-like flavor. It’s common in sweets and can also be used in main courses to make the taste more complex and interesting. Plain anise seeds as used in small amounts in herbal teas and cooking are generally safe in pregnancy and breastfeeding because exposure is relatively low. Essential oil and concentrates, however, are more dangerous, and should be avoided because of concerns that they might trigger contractions.

Patients who use anise in pregnancy could develop uterine stimulation which might cause early labor. This could result in pregnancy loss in the early stages of the pregnancy, and might cause complications for more progressed pregnancies. Premature birth carries a number of risks for both mother and child, and should be prevented if possible. Avoiding concentrated anise while pregnant, along with other herbs known to promote contractions, is advisable.

With Chinese star anise, there is cause for additional concern. Some sources of this herb use a related product, Japanese star anise, that is actually toxic and not safe for either culinary or medicinal use. If patients do not have a pure source of the herb, they could be at risk of exposure to the more toxic form, which could cause illness and complicate the pregnancy. For safety reasons, it can be advisable to avoid Chinese star anise in pregnancy, unless a source is known and verified as safe.

Any questions about the use of food ingredients and herbal preparations in pregnancy can be discussed with an obstetrician. Much of the research on these subjects is incomplete because it is difficult to perform clinical trials without running into ethical problems, since scientists don’t want to endanger expecting mothers and their babies. Regulatory agencies may indicate that anise in pregnancy is of unknown safety, reflecting a general lack of data. An individual health care provider might have opinions for a patient based on experience or medical history.

Anise is a common flavoring in traditional foods. But it is an herb not commonly used in dishes, so it may be hard to determine which foods contain anise and which foods you should watch out for if you are trying to avoid anise. Generally, the licorice flavor of the anise seed is utilized in liqueur flavorings and desserts to add a dull sweet taste.

Since pregnant women may need to cut out sugar from their diet, awareness of how anise seeds occur in food can help them avoid potentially toxic foods. Some traditional desserts like Pan de Muerto and baklava include anise as a star ingredient.

Generally, cuisines that are likely to use anise seeds are German, Mexican, Italian, Middle Eastern, and Indian. Anise seeds are most prominently used in traditional Italian biscotti recipes but are also in other desserts of Middle Eastern, Indian, and western European origin.

The use of anise dates back ages in many different cuisines. Anise is a great nutrient since it contains many secondary minerals that the body needs, like manganese, iron, and phosphorus.

Anise also tastes sweet without having any fattening sugar compounds within it. Many who frequently use the herb claim that it enhances every food due to the naturally umami sweet flavor it adds. Therefore, it is a good herb for those looking for sugar-free desserts to be aware of.

While anise can have adverse effects on the body, these studies used concentrated dosages of anise seeds or anise oil that were typically 100 or 200mg. Many dessert recipes that feature anise only include around 20mg (4 teaspoons) at most, which is double the serving size of anise seeds.

Anise has several health benefits that make it a good nutrient to use when not pregnant. Anise is great for those with indigestion or chronic intestinal pain like Irritable Bowel Syndrome. One study found that constipated uses of anise experienced an increased colonic transit time, meaning there is evidence for anise as a safe alternative and effective for laxatives.

Anise also has preventative properties that can help the human body. Anise is a natural sweetener like licorice, so eating it in moderate quantities can balance blood sugar levels due to a chemical within the seed. Additionally, evidence exists that anise can reduce inflammation and lower rates of depression in humans.

Anise is also known as an alleviator for respiratory illnesses and topical issues like scabies and psoriasis.

Anise is most notable for its effects on the female menstrual cycle, and those effects are what make it a potential risk for pregnant women. The herb was used for years as an estrogenic agent and linked to increased milk secretion, menstruation promotion, and birth facilitation. Studies show that anise can alleviate symptoms of menopause like hot flashes and menstrual cramps. 

Estrogenic agents are foods, ointments, or medicines that stimulate the production of estrogen-like compounds. The body then uses the synthetic estrogen as if it was naturally produced estrogen. This leads to hormone leveling which can cause menstruation, induce labor, and help with lactation.

However, the effects of anise as an estrogenic agent have not been fully explored. Therefore, pregnant women are encouraged to avoid anise since it could cause complications during pregnancies.

Adverse effects of anise can cause allergic reactions and intestinal issues. For those trying new foods, asking to see the ingredient list can help identify possible exposure to new ingredients.

While it is rare, some people are allergic to anise and can see a variety of symptoms. Topical anise allergies lead to redness, itchiness, and swelling in some cases. Respiratory allergy symptoms can cause wheezing and shortness of breath. Alimentary anise allergies can also lead to nausea, vomiting, and stomach pain.

Due to its estrogenic effects, anise can also conflict with people with hormone-sensitive conditions like pregnancy. If after eating anise, nausea or vomiting, respiratory difficulties, or a rash develops, you should consult your doctor immediately. Additionally, any increased cramping, bleeding, or pain while pregnant should also be reported to a doctor immediately.

While anise has been traditionally used for various remedies, its safety during pregnancy is not well-established. According to the American Pregnancy Association, pregnant women should exercise caution with herbs and consult a healthcare provider before use. Anise contains anethole, which in large quantities could potentially have estrogen-like effects, so moderation is key. It's generally recommended to avoid excessive amounts of anise, especially in the form of concentrated essential oils.

Anise tea is sometimes used to alleviate nausea and indigestion, which are common during pregnancy. However, there is limited scientific evidence to support its effectiveness for these symptoms in pregnant women. If you're considering anise tea for nausea, it's important to consult with your healthcare provider first to ensure it's appropriate for your specific situation and to determine a safe amount.

Using anise in large amounts or in the form of essential oil may pose risks during pregnancy, such as potential impacts on hormone levels due to its anethole content. There is also a risk of allergic reactions or interactions with other medications. It's crucial to consult with a healthcare provider before using anise or any herbal supplements during pregnancy to assess any potential risks for you and your baby.

There is no universally recommended dosage of anise for pregnant women, as its safety profile is not well-defined. It's essential to consult with a healthcare provider for personalized advice. Generally, if approved by a healthcare professional, anise should be consumed in culinary amounts, such as those used in cooking, rather than medicinal or concentrated forms.

For managing pregnancy symptoms like nausea, there are several alternatives to anise that may be considered safer. Ginger, for example, has been widely studied and is often recommended for morning sickness. Vitamin B6 supplements are also known to help with nausea during pregnancy. Always discuss with your healthcare provider before trying any new remedy or supplement to ensure it's safe for your specific health needs.