Bleeding and bruising: High doses of turmeric can cause significant blood thinning that increases the risk of bleeding and bruising, particularly in patients with anticoagulant medications or bleeding disorders. Turmeric’s active compound curcumin acts by inhibiting aggregation of platelets, which may worsen bleeding.
Gastrointestinal disturbances: Consuming large amounts of turmeric may cause stomach upsets, diarrhea, and nausea among other gastrointestinal diseases. The pungent and bitter flavors in turmeric may cause irritation of the stomach lining leading to digestive conditions.
Risk of kidney stones: Turmeric has naturally occurring compounds called oxalates, which are known to contribute to stone formation. People who have had a history of renal stones or are at risk from oxalate stones should limit turmeric intake. Oxalates can bind with calcium, thus increasing the risk for stone creation.
Allergic reactions: Some are allergic to it. This happens if people have side effects that may be mild, such as a skin rash, itching, or possibly even respiratory problems. With rare cases, allergic reactions may be severe.