To reduce water retention, lower your sodium intake and eat potassium-rich foods like leafy greens. Surprisingly, drinking more water also helps. For reducing body fat, focus on a calorie deficit rich in lean proteins and fibre. Supplements like magnesium, vitamin B6, and dandelion root can help with mild fluid retention. For fat loss, green tea extract can support metabolism. Medications like prescription diuretics (such as spironolactone or hydrochlorothiazide) treat medical fluid retention, while options like orlistat can assist with weight loss under supervision. Please consult a doctor before starting any medications or supplements to ensure they are safe for you.