Cloves—those tiny, fragrant buds—are praised for their bold flavor and impressive health benefits.
Known for their antioxidant and anti-inflammatory powers, they’ve been hailed as a super-spice that soothes toothaches, boosts immunity, and spices up your favorite dishes. But behind their pleasant aroma lies a side few talk about: in certain cases, cloves can do more harm than good.
If you regularly sprinkle them into meals, sip clove tea, or apply clove oil, it’s worth knowing the risks. For people with specific health conditions, cloves can shift from healing helper to hidden hazard. Here are nine situations where they may be silently harming you.
1. Acid Reflux or GERD
Cloves contain eugenol, which relaxes muscles—including the lower esophageal sphincter that keeps stomach acid from rising. If it relaxes too much, acid can flow upward, causing heartburn. For the 20% of adults with GERD, cloves may worsen burning, bloating, and regurgitation.
2. Blood Thinners or Bleeding Disorders
Eugenol naturally thins the blood, which can be dangerous for those on anticoagulants like warfarin or with conditions such as hemophilia. Mixing cloves with these drugs increases the risk of bruising, bleeding, or complications during surgery.
3. Spice Allergies
If you’re allergic to spices or plants in the Myrtaceae family (like eucalyptus or allspice), cloves could cause itching, swelling, or even breathing difficulties. Severe cases may lead to anaphylaxis. A patch test before consuming or using clove oil is wise.
4. Pregnancy or Breastfeeding
While small amounts in food are generally safe, high doses or clove oil may stimulate uterine contractions, increasing the risk of preterm labor. Eugenol can also pass into breast milk, possibly affecting infants. Always consult your doctor before use.
5. Liver Problems
In moderate amounts, eugenol is an antioxidant; in high doses, it can be toxic to the liver. People with hepatitis, fatty liver, or cirrhosis should avoid heavy culinary use, supplements, or clove oil to prevent further strain.
6. Stomach Ulcers or Gastritis
Cloves can stimulate digestion, but for those with ulcers or gastritis, they may irritate the stomach lining, intensifying pain or nausea. Gentler remedies like ginger or chamomile are better options.
7. Low Blood Sugar
Cloves may lower blood sugar, which helps many with diabetes—but for those prone to hypoglycemia, this could cause dizziness, shakiness, or fainting. Monitor your intake, especially if you take insulin or other sugar-lowering medications.
8. Kidney Issues
High doses of cloves or clove oil can stress the kidneys. For those with chronic kidney disease, even small amounts may be problematic. Limit use and avoid concentrated forms unless approved by a doctor.
9. Sensitive Skin
Clove oil’s potency can irritate or burn skin, especially if used undiluted. For people with eczema, psoriasis, or sensitive skin, it’s best to dilute with a carrier oil and test on a small area first.
Final Thought
Before adding cloves to your health routine, consider your personal risks and talk to a medical professional. Use high-quality cloves or oils from trusted sources, and remember that “natural” doesn’t automatically mean “safe.”
Cloves may be small, but their effects—good or bad—can be significant. By understanding the risks, you can enjoy their benefits while protecting your health.