Categories: Medicinal plants

10 serious side effects of turmeric

Discover the 10 serious side effects of turmeric.

Turmeric ( Curcuma longa ) is a spice used in cooking as a dye, or as curry. In most cases, there are no side effects of turmeric when taken in recommended doses.

What is turmeric good for?

The active principles of turmeric are curcuminoids, beta carotenes, and the essential oil of the plant.

It has antioxidant, anti-inflammatory, digestive, carminative, antidepressant, hepatoprotective, and immunostimulating properties. It can be recommended in the following cases:

• Digestive plant


• Heartburn

• Mild or seasonal depression (winter depression, seasonal changes, …)

• Boost immunity

• High cholesterol

• Arthritis, osteoarthritis, osteoarthritis


• Nutritional support of cancer treatment

• Natural anti-inflammatory

• Skin health

• Menopause

• Cardiovascular diseases


Side effects of taking too much turmeric

This health risk is due to adulteration processes aimed at lowering production prices and which can play a trick on consumers.

1. It can make you bloated

A study published in Cancer Prevention Research showed that curcumin causes diarrhea, bloating, and other digestive problems in a small number of people.

This is a rare side effect of turmeric , but it is important to know if you take large amounts of the spice regularly.

2. Cause nausea and headache in some people

Other research that saw the light in BMC Complementary Medicine and Therapies focuses on the fact that curcumin can cause headaches or nausea.

It’s not the usual thing anyway – it’s also considered a rare side effect of Asian spice.


3. Ability to temporarily stain skin and nails

The seasoning’s own intense yellow coloration makes it used as a natural dye. For this reason, fresh turmeric can stain your nails or the skin of your hands.

It is not worrisome, since the coloration is temporary and disappears with a simple wash.

4. It can affect the gallbladder

In large quantities, turmeric is known to cause some gallbladder problems in a small number of people, especially those with pre-existing problems.

A study in the Asia Pacific Journal of Nutrition showed that large amounts of turmeric can cause the gallbladder to contract, causing it to function improperly.

Furthermore, taking large doses of turmeric supplements can significantly increase urinary oxalate levels, increasing the risk of kidney stone formation.


5. Negative drug interaction

According to MedicineNet, turmeric can negatively interact with medications including blood thinners, antidepressants, antibiotics, antihistamines, heart medications, and chemotherapy treatments.

It can also interfere with diabetes drugs and cause dangerously low blood sugar levels.

6. It hinders the absorption of iron

The Spanish Agency for Food Safety and Nutrition (AESAN) advises that those under 18 years of age, pregnant women, and infants do not consume supplements with curcumin, the main active compound in turmeric.

From the body, they warn that it prevents the correct absorption of iron, in addition to the fact that the substance and its metabolites are transferred to the baby during the lactation period.

If you suffer from gastrointestinal disorders or kidney stones, you better consult with your doctor about the consumption of these supplements.


7. Causes low blood pressure

One of the healthy benefits of turmeric is precisely its regulating effect on blood pressure levels, but it is noted that taking high doses can result in blood pressure values that are too low, especially if combined with medical treatment.

8. Slow blood clotting

Since turmeric can slow blood clotting, its use is not recommended before or after surgery.

It is important to stop consuming it at least 2 weeks before a scheduled surgery.

9. Causes allergy

Those who have a known allergy to turmeric should not only avoid its consumption, they should also avoid coming into contact with it.

Curcumin can be a contact allergen; there are records of several people who have experienced dermatitis and urticaria due to contact with the spice.


Because turmeric and ginger belong to the same family, a person allergic to ginger is likely to be allergic to turmeric as well.

10. Reduce testosterone levels

It has been observed that when turmeric is taken orally (in capsules), it can lower testosterone levels and affect sperm motility. This is believed to reduce fertility in men.

Contradictions of turmeric

Like all medicinal plants, turmeric may be subject to contraindications when it is used in the context of therapeutic use.

People with certain medical conditions

Turmeric is particularly contraindicated in people:


▪ Suffering from blockages, gallstones, or liver disease (as this herb increases bile secretion, can over-activate the liver and stimulate the gallbladder)

▪ Showing signs of turmeric allergy (rashes, pimples, etc.)

▪ Having medical intervention or tooth extraction within two weeks

In high doses, it is also not recommended for individuals suffering from stomach ulcers or duodenum, as it can increase irritation of the mucous membranes.

If you are concerned, ask your doctor or a healthcare professional for advice before consuming turmeric for food or therapy.


Pregnant or breastfeeding women

The European Medicines Agency advises pregnant or breastfeeding women not to consume turmeric except for food.

This herb is used to treat the absence of menstruation and to help eliminate stagnant blood. It can, in large doses, stimulate contractions of the uterus.

People undergoing medical treatment

If you are taking any of the treatments listed below, consult your doctor before taking turmeric for food or therapy.

Indeed, this plant can accentuate the effects of certain treatments and this can have serious consequences.


Turmeric has anticoagulant effects. Taken with antiplatelet drugs or anticoagulants, it will increase the thinning action of the drugs and can cause serious side effects, such as bleeding, hemorrhaging, or bruising.


Among antiplatelet and anticoagulant drugs, we find aspirin in particular.


Turmeric can slow down the action of antacids which aim to decrease gastric acidity and heal peptic ulcers.

This therapeutic herb combined with taking antacids can cause side effects: bloating, gas, chest pain, nausea, or stomach cramps.

In some cases, especially in people with gastroesophageal reflux disease, taking turmeric may have the opposite effect and increase acid secretion.


Turmeric has an anti-diabetic action. Combined with drugs intended to treat diabetes, it can increase their effects and, depending on the person, cause undesirable effects: hypoglycemia, excessive sweating, tremors, visual disturbances, dizziness, anxiety, etc.


Anti-inflammatory drugs

Turmeric has recognized anti-inflammatory properties. It is also often for this therapeutic property that it is consumed. It would be as effective as paracetamol.

Taken with certain other anti-inflammatory drugs, it can cause overdose and lead to unwanted effects.

However, an Italian study has shown that the combination of turmeric with a nonsteroidal anti-inflammatory treatment would accelerate healing.

It is then advisable to remain cautious and to seek advice from your doctor before consumption because the dosage is in this case very precise.

We hope the article on the 10 serious side effects of turmeric has been of help to you.

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