What is the diuretic diet...? is it healthy, what do you eat when on this diet?

Don't do it alone: These are mostly old scams in which a person would take diuretic tablets obtained perhaps illicitly, and mistake loss of water for loss of fat. Claims that certain foods are natural diuretics aren't really scientific. If you want to lose weight for keeps, live healthy, and look good, your best source of advice is your personal physician and your best choices are physical fitness options.