Fluid overflow, also known as volume overload (hypervolemia), is a medical disorder in which there is an excess of fluid in the blood. Excess fluid, mostly salt and water, accumulates in the body, causing weight gain. The following indications or symptoms will be present: Swelling in the legs and arms is noticeable (peripheral edema) Increased appetite but no change in diet habits Feeling of fullness after eating little Food tasting bland Without drinking more fluids you have lost more than 2% of your body weight in three months You are taking diuretics for any reason Other conditions that lead to fluid retention are also present. Diuretics are drugs that increase urine production and/or decrease re-absorption of sodium in the kidney tubules. Common diuretics include hydrochlorothiazide, indapamide, and spironolactone. Diuretics can be taken orally or injected into a vein (intravenously). They are often prescribed for people with high blood pressure, heart failure, renal disease (the filtering system of the kidney does not work properly), diabetes, or liver disease. The goal of treating these disorders is to reduce fluid accumulation and thereby reduce the risk of serious complications such as heart failure or kidney damage. Excessive fluid intake increases the amount of fluid in the body. This extra fluid causes several problems. It causes weight gain which may lead to depression and anxiety. It can cause your blood pressure to rise if you have hypertension (high blood pressure).