1. Salt
Table salt is about 40% sodium and contains bleaching agents and dextrose. It is devoid of nutrients and healthy components, thus bombarding your kidneys with excessive amounts of a single element. When you consume lots of salt, the kidneys have to try to keep up with the resulting salt levels in the blood, increasing the need for water to keep intercellular fluids balanced. Put simply, s high salt diet will alter the sodium balance, causing the kidneys to have reduced function and remove less water resulting in higher blood pressure. This puts a massive strain on the kidneys and can lead to kidney disease. Moreover, a diet high in salt has been shown to to increase the amount of protein in the urine which is a major risk factor for the decline of kidney function. To keep your kidneys healthy make sure you consume no more than 6g of salt every day.