Turmeric
Curcuma longaLead chromate was found to have been added to brighten cheap turmeric, causing lead poisoning in Bangladesh.
What is Turmeric?
Turmeric (Curcuma longa) is a plant of the Zingiberaceae family. Traditions that use it: Asia and Siberia. Part used: rhizome.
What is Turmeric used for?
Traditional use: In India, turmeric is applied to the bride and groom before the wedding (the haldi ceremony). Scientific evidence: limited. Contains curcumin.
Is Turmeric safe?
Safety label: caution. Safe as a spice. Liver injury has been reported with high-dose capsules. Can interact with blood thinners; people with gallstones should be careful.
Traditional use
In India, turmeric is applied to the bride and groom before the wedding (the haldi ceremony). In Ayurveda it is used for inflammation and digestion.
Used as a cheap substitute for saffron to colour zerde pudding and pilafs.
In nature
Mix-up risk
May be sold as saffron; it lacks saffron’s distinctive smell and thread shape.
Preparation
The root is dried and ground; absorption improves when taken with black pepper and fat.
What science says
Contains curcumin. Some small studies show benefit for knee osteoarthritis pain; the NCCIH says the evidence for most claims is weak. Curcumin is poorly absorbed.
How strong is the evidence?
Claims often repeated online about Turmeric, and what science says today.
| Claim | Evidence | Note |
|---|---|---|
| Eases knee osteoarthritis pain | Limited evidence | Effect close to painkillers in some small studies. |
| Reduces inflammation | Limited evidence | Strong in the lab; inconsistent results in humans. |
| Prevents or treats cancer | No evidence | According to the NCCIH, no evidence in humans. |
| Helps weight loss | No evidence | No reliable evidence. |
Common mistakes
- Taking high-dose curcumin capsules for long periods: liver injury has been reported.
- Taking supplements while on blood thinners.
- Ignoring lead added to cheap turmeric powders; buy from a reliable source.
Frequently asked
How is turmeric absorbed better?
Absorption improves with black pepper (piperine) and fat. This can also increase drug interactions.
Can I eat turmeric every day?
Safe in food amounts. Ask a doctor about high-dose supplements.
Does turmeric harm the liver?
Not as a spice; rare liver injury has been reported with high-dose supplements.
Safety
Safe as a spice. Liver injury has been reported with high-dose capsules. Can interact with blood thinners; people with gallstones should be careful.
Drug interactions
| Medicine or substance | Why it matters |
|---|---|
| Blood thinners and antiplatelet drugs | May increase bleeding risk. |
| Diabetes medicines | Can lower blood sugar. |
| Some cancer drugs | Ask the oncologist before combining with chemotherapy. |
| Iron supplements | High doses may reduce iron absorption. |
This list is not complete. If you take regular medication, ask your pharmacist or doctor before trying Turmeric.
Similar plants
Sources
- EMA monographCurcumae longae rhizoma: European Medicines Agency herbal assessment
- NCCIHUS National Center for Complementary and Integrative Health: use and safety summary
- Botanical recordKew Plants of the World Online: Curcuma longa
- Titles of research sources are summarised in Turkish on the Turkish page; links open the original English publications.
Written by Edanaz Tınmazlar · Last reviewed: · Türkçe