Curcumin, a substance in turmeric, may help to reduce inflammation. Several studies suggest that it might ease symptoms of osteoarthritis and rheumatoid arthritis, like pain and inflammation. Other compounds in turmeric might also be medicinal. Other preliminary lab studies suggest that curcumin or turmeric might protect against types of skin diseases, Alzheimer’s disease, colitis, stomach ulcers, and high cholesterol. Based on lab studies, turmeric and curcumin might also help treat upset stomach, scabies, diabetes, HIV, uveitis, and viral infections.