Foods that are high in fat, sugar and processed junk are also usually high in sodium as well. Sodium, also known as salt, is known to raise numbers on a your scale. However, rest assured, this weight gain is from water retention not fat gain. Begin eating less sodium and the water weight drops away. The better news is if you slow down with high sodium foods, chances are you’ll also be eating much healthier and your heart and kidneys will thank you. Too much sodium over time leads to too much extra work for the kidneys and higher blood pressure. Not something that is worth having those chips everyday.