When it comes to maintaining your investment, the smartest money you spend could be on a new roof. Nationally, the average homeowner spends about $6,600 to install a new roof, with certain cities like Denver ($7,500) being higher than average, and others being below average like Austin, TX ($6,100).
Calcium and Potassium. The minerals calcium and potassium also contribute to kidney function. The podocyte cells in your kidneys rely on both calcium and potassium to help control blood filtration, according to a study published in the Journal of the American Society of Nephrology in 2004.
Renal function, or kidney function, is a measure of how well the kidneys are filtering blood. If you have two fully-functioning kidneys, you have all of your renal function (100 percent). A majority of kidney diseases damage renal function by attacking little filtration units in the kidneys, called nephrons.enal function, or kidney function, is a measure of how well the kidneys are filtering blood. If you have two fully-functioning kidneys, you have all of your renal function (100 percent). A majority of kidney diseases damage renal function by attacking little filtration units in the kidneys, called nephrons.