Sodium foods increase fluid retention; potassium foods decrease fluid retention

So if you are overweight or obese you need to avoid salt/sodium and salty food, and eat plenty of fruit and unsalted vegetables because these are naturally rich in potassium. You will then safely and easily lose excess water weight and you will have much more energy because of not having to carry that extra fluid around with you all the time.

Sodium and Potassium in foods