Star anise is a spice with compounds that may reduce inflammation and support digestion
Star anise comes from the fruit of a small tree native to southwest China and Vietnam. The spice has a licorice-like flavor and contains several active compounds—particularly one called anethole—that research suggests may help calm inflammation in the body and ease digestive discomfort. People have used it in traditional medicine for thousands of years, and modern studies are beginning to explain why.
You can find star anise in grocery stores as whole dried pods or ground into powder. It's common in Asian cooking, baking, and herbal teas. Because it's a food spice rather than a medication, the amounts people consume vary widely—from a pinch in a recipe to a full pod steeped in hot water.
Key Takeaways
- Star anise contains anethole and other compounds that may reduce inflammation and support digestive function.
- The spice has been used in traditional Chinese and Indian medicine for centuries, and some of these uses are now being studied in laboratories.
- You can consume star anise as a whole pod in tea, ground into food, or as part of spice blends without a prescription.
- Star anise is generally safe for most people, but pregnant women and people taking certain medications should check with a healthcare provider first.
How star anise may reduce inflammation
Inflammation is your body's response to injury or irritation, but when it becomes chronic—lasting weeks or months—it can contribute to pain and other health problems. Star anise contains compounds that appear to interfere with the inflammatory process at a cellular level.
The main active compound, anethole, has shown anti-inflammatory effects in laboratory and animal studies. Research published in peer-reviewed journals suggests it may reduce the production of inflammatory molecules called cytokines. However, most of this research has been done in test tubes or in animals, not yet in large groups of people, so the real-world strength of this effect remains unclear.
Some people add star anise to tea or use it in cooking hoping to manage inflammation-related conditions like joint pain or digestive inflammation. The amounts used in cooking are small, so any effect would likely be modest compared to anti-inflammatory medications.
Star anise and digestive comfort
Star anise has a long history in traditional medicine for easing digestive complaints—bloating, gas, cramping, and slow digestion. Several of its compounds may contribute to this effect. Anethole appears to relax smooth muscle in the digestive tract, which could reduce cramping. The spice may also promote the movement of food through your stomach and intestines.
In traditional Chinese medicine and Ayurveda, star anise tea is commonly used after meals to settle the stomach. Some people find it helpful for mild indigestion or bloating, though controlled studies in humans are limited. If you have a digestive condition like irritable bowel syndrome or inflammatory bowel disease, check with your healthcare provider before using star anise regularly, as it may interact with your treatment.
Other potential uses people explore
Beyond inflammation and digestion, star anise has been studied for several other possible benefits. Some research suggests it may have antimicrobial properties—meaning it could help fight certain bacteria and fungi—though again, most evidence comes from laboratory work rather than human trials.
Traditional medicine also uses star anise for respiratory support, cough relief, and sleep. A few small human studies have looked at these uses, but the evidence is not yet strong enough to make confident claims. Star anise is sometimes included in herbal formulas marketed for these purposes, but the spice alone is not a proven treatment for any medical condition.
How to use star anise
The simplest way to use star anise is to steep a whole pod in hot water for 5 to 10 minutes to make a tea. You can drink this plain or add honey and lemon. Some people chew the pod itself after a meal. In cooking, you can add whole pods to soups, stews, and rice dishes, or grind the pods into powder to sprinkle on food.
Star anise is also sold as a supplement in capsule form, though the dose and purity vary by brand. If you choose to use it this way, look for products from manufacturers that test their ingredients for quality and contaminants. Start with small amounts to see how your body responds, especially if you have a sensitive stomach.
Safety and who should be cautious
Star anise is safe for most people in the amounts used in cooking and tea. It has been consumed for centuries without serious side effects in typical doses. However, some groups should be careful or avoid it.
Pregnant women should limit star anise because anethole may affect hormone levels, and very high doses have caused problems in animal studies. People taking blood thinners, hormone-sensitive medications, or certain psychiatric drugs should check with their healthcare provider, as star anise may interact with these treatments. If you have a known allergy to plants in the Apiaceae family (which includes fennel, celery, and parsley), you may react to star anise as well.
Consuming star anise in normal culinary amounts is unlikely to cause problems. If you're using it as a supplement or drinking it as a daily tea, mention it to your healthcare provider, especially if you take medications or have a chronic health condition.
The difference between star anise and regular anise
Star anise and anise seed come from different plants but taste similar and contain many of the same compounds. Star anise is the fruit of Illicium verum, a tree native to Asia. Anise seed comes from Pimpinella anisum, a plant native to the Mediterranean and Middle East. Both contain anethole and have been used in traditional medicine for similar purposes.
In cooking, they're often used interchangeably, though star anise has a slightly stronger licorice flavor. If a recipe calls for one and you have the other, you can usually substitute it in roughly equal amounts. For medicinal purposes, the effects are likely similar, though most research has focused on star anise specifically.
What the research actually shows
It's important to be honest about what we know and don't know. Laboratory and animal studies suggest star anise has anti-inflammatory and digestive properties. A handful of small human studies support some traditional uses, but large, well-designed trials in people are still lacking.
This doesn't mean star anise doesn't work—it means we don't yet have the level of evidence we'd have for a pharmaceutical drug. Many effective traditional remedies are still being studied. If you're considering star anise for a specific health concern, think of it as a complementary approach rather than a replacement for medical treatment. If your symptoms are severe or persistent, see a healthcare provider to rule out conditions that need professional care.
Frequently Asked Questions
Can I drink star anise tea every day?
For most people, occasional star anise tea is safe. If you want to drink it daily, mention it to your healthcare provider first, especially if you're pregnant, nursing, or take medications. Daily use over long periods hasn't been well studied in humans.
Does star anise actually reduce inflammation, or is it just traditional belief?
Laboratory studies show that compounds in star anise do reduce inflammation in cells and animals. However, the effect in a living person eating normal amounts is likely modest. It may help as part of an overall approach to managing inflammation, but it's not a replacement for medical treatment.
Is star anise the same as licorice root?
No. Star anise and licorice root come from different plants and have different compounds, though both taste like licorice. Licorice root is stronger and carries different safety concerns, especially for people with high blood pressure. Don't assume they're interchangeable.
Can star anise help with bloating and gas?
Many people report that star anise tea helps settle their stomach after meals. Some research supports this, suggesting the spice may relax digestive muscles and reduce gas. Results vary by person, so try it and see if it works for you.
What's the safest way to use star anise if I'm on medications?
Using star anise as a culinary spice in normal cooking amounts is very unlikely to cause problems. If you want to use it as a supplement or drink it as a daily tea, tell your healthcare provider or pharmacist what you're taking so they can check for interactions with your specific medications.