Cloves are the flower buds of the clove tree, an evergreen also known as Syzygium aromaticum. Cloves are best known as a sweet and aromatic spice, but they have also been used in traditional medicine.
Cloves contain fiber, vitamins, and minerals, so using whole or ground cloves to add flavor to your food can provide some important nutrients.
One teaspoon (2 grams) of ground cloves contains (4Trusted Source):
Calories: 6, Carbs: 1 gram,  Fiber: 1 gram,Manganese: 55% of the Daily Value (DV) and Vitamin K: 2% of the DV

cloves are rich in antioxidants,Test-tube studies show that the compounds in cloves may reduce cancer cell growth and promote cancer cell death. More research is needed to confirm these effects in humans.

Some studies show that cloves and the compounds they contain may help reduce oxidative stress and protect the liver. cloves may help promote insulin production and lower blood sugar.