Turmeric as a Food: Spice vs Supplement
Turmeric as a cooking spice is not the same as turmeric or curcumin supplements. What the sources say about each, the liver injury reports with supplements, and lead in spice.
Content last updated . This page has not been medically reviewed.
Safety first. Supplements can cause side effects and interact with medicines. Read mushroom safety and interactions before you use any mushroom product.
Liver warning first. Liver injury has been reported with turmeric and curcumin supplements, including products made to be absorbed better. [1] If you notice tiredness, nausea, poor appetite, dark urine or yellowing of the skin or eyes while using such a product, NCCIH advises stopping it and talking with your health care provider. [1] See Liver injury warning signs from supplements and herbs.
Turmeric the spice and turmeric the supplement
Turmeric is Curcuma longa L., a plant in the ginger family, Zingiberaceae. [2] The part used is the rhizome, an underground stem, which is used in cooking and in other ways. [1] Curcumin is a major component that gives the spice its yellow color. [1]A pinch in a curry and a capsule sold for joints are different things. Supplement products can contain concentrated curcumin and sometimes other plant ingredients such as piperine from black pepper. [1] Almost all of the research below was done on oral turmeric or curcumin products, not on turmeric eaten in meals. For the herb and supplement profiles see Turmeric and Curcumin supplements.
Traditional use
Turmeric has been used in Chinese, Indian (including Ayurvedic), Islamic and Thai traditional medicine for conditions such as indigestion, colds, skin infections, arthritis and liver disease. [1] This is traditional use only and is not proof that it works. The European Medicines Agency's herbal committee (HMPC) accepted turmeric preparations for mild digestive problems in adults on the basis of long-standing use, and said clinical trial evidence was insufficient. [3] Those are medicines, not cooking amounts.What research shows
| Use | What the source found | Strength of evidence | Form studied |
|---|---|---|---|
| Knee osteoarthritis | NCCIH describes the initial evidence from several meta-analyses as positive, with higher-quality evidence needed. [1] | Promising but limited | Oral turmeric or curcumin products |
| Fatty liver disease (NAFLD) | Initial research suggests some measures may improve, but it is unclear which. [1] | Promising but limited | Oral turmeric or curcumin products |
| Mouth sores from cancer treatment | Initial research suggests oral or mouthwash forms might help. [1] | Promising but limited | Oral and mouthwash curcumin |
| Other conditions | NCCIH says there is not enough evidence to conclude oral turmeric or curcumin helps. [1] | Insufficient evidence | Oral turmeric or curcumin products |
| Turmeric eaten as a spice, any health outcome | Proper evidence not found. We looked in the NCCIH turmeric page, the EMA herbal committee summary and PubMed for dietary turmeric. | Not assessable | Cooking amounts |
NCCIH's overall conclusion is that we do not know enough to say whether turmeric or curcumin is beneficial for any health purpose. [1]
Golden milk and teas
Drinks made with turmeric are covered in Turmeric milk and golden milk and Turmeric tea.Related
Ginger as a food, Black pepper, cayenne and capsaicin foods and Anti-inflammatory foods: claims checked.Frequently asked questions
Is turmeric in food healthy?
Turmeric is a normal cooking spice. The research on health effects is mostly on oral turmeric or curcumin products, and NCCIH says we do not know enough to say it helps any condition. [1] Proper evidence not found for cooking amounts and health outcomes in the sources we read.
Can turmeric hurt the liver?
Reports exist with turmeric and curcumin supplements, including a death from acute liver failure among ten cases in one US network. [4] NCCIH says highly bioavailable curcumin formulations may harm the liver. [1]
Does black pepper make turmeric work better?
Piperine from black pepper is one way to improve curcumin absorption in products. [1] Three of seven products tested in the US liver-injury series also contained piperine. [4]
Is turmeric safe in pregnancy?
NCCIH says turmeric supplements may be unsafe during pregnancy. [1] Ask your prenatal clinician about both food amounts and any supplement.
Can turmeric powder contain lead?
In a 2024 study of samples from South Asia, 14% had detectable lead above 2 micrograms per gram, and some pointed to added lead chromate. [6]
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
Safety
- Liver. The US Drug-Induced Liver Injury Network described ten cases linked to turmeric products between 2004 and 2022. Five people were hospitalized and one died of acute liver failure; injury usually began 1 to 4 months after starting. [4] Of the seven products tested, three also contained piperine. [4] An Italian report of seven cases linked liver inflammation to high-bioavailability, high-curcumin turmeric supplements. [5] These reports concern supplements and herbal products. The sources we read do not say that cooking amounts of spice caused liver injury, and they do not show that such amounts are free of risk.
- Lead in spice. A 2024 study collected 356 turmeric samples (roots and powder) from 23 cities in India, Pakistan, Sri Lanka and Nepal. In 14% of them lead was above 2 micrograms per gram, and some had lead and chromium ratios suggesting lead chromate was added. [6] The authors note that lead-chromate spices have been linked to lead poisoning from Bangladesh to the United States. [6] This does not tell you about any particular jar. See Product quality and contamination.
- Pregnancy and breastfeeding. NCCIH says turmeric supplements in pregnancy may be unsafe, and little is known about amounts above those in food while breastfeeding. [1]
- Medicines. NCCIH advises talking with a health care provider before using any herbal product because some herbs and medicines interact. [1] Ask a pharmacist; see How interactions work.
- Side effects. Oral turmeric can cause nausea, vomiting, acid reflux, stomach upset, diarrhea or constipation. [1]
- Surgery, children, kidney disease, allergy. Not described for turmeric as a food in the sources we read. Tell the surgical team about any supplement you use.
References
- National Center for Complementary and Integrative Health (NCCIH). Turmeric: Usefulness and Safety. Read 2026-10-23.
- GBIF Secretariat. Curcuma longa L., GBIF Backbone Taxonomy. Read 2026-10-23.
- European Medicines Agency (EMA), Committee on Herbal Medicinal Products (HMPC). Curcumae longae rhizoma, herbal medicinal product. Read 2026-10-23.
- [Liver Injury Associated with Turmeric-A Growing Problem: Ten Cases from the Drug-Induced Liver Injury Network [DILIN]](https://pubmed.ncbi.nlm.nih.gov/36252717/). Am J Med 2023. PMID 36252717. Read 2026-10-23.
- Acute liver injury following turmeric use in Tuscany: An analysis of the Italian Phytovigilance database and systematic review of case reports. Br J Clin Pharmacol 2021. PMID 32656820. Read 2026-10-23.
- Evidence of turmeric adulteration with lead chromate across South Asia. Sci Total Environ 2024. PMID 39053552. Read 2026-10-23.