Fennel Seeds: Studies have shown that fennel seeds work as a diuretic and help flush out excess sodium and water from your body. This in turn helps reduce water retention. It also prevents the build-up of toxins in the body, aids digestion, relieves gas and stimulate perspiration.
Steep one teaspoon of fennel seeds in a cup of hot water. Strain it and drink this tea three times a day until you see improvement.