Protein makes up an essential component of your diet. It provides nutrients your cells and tissues need to function properly. However, excessive protein consumption can have an adverse impact on your health. This can include a potential increase in your risk of developing kidney stones -- mineral crystals in your urinary tract.
Kidney Stone Composition
Kidney stones consist of minerals that solidify, crystallize and eventually form a noticeable stone. The stones first begin as a small crystal, upon which additional mineral ions begin crystallize, eventually forming a sizeable stone. The mineral content of kidney stones can vary, but approximately four out of five kidney stones are calcium oxalate, according to the Columbia University Medical Center. As a result, high levels of calcium or oxalate in your bloodstream and urine can increase your risk of calcium oxalate kidney stones.
Effect of Proteins
Consuming a large amount of protein can affect on your risk of kidney stones. Digesting protein increases your body's levels of both calcium and oxalate, promoting calcium oxalate kidney stone formation. In addition, some forms of protein – such as meat – also increase levels of uric acid, and can contribute to uric acid crystal formation. That can initiate the development of kidney stones consisting of uric acid. Finally, excessive protein intake can lead to dehydration, another factor that increases your risk of kidney stones.
Symptoms
While smaller kidney stones might pass through your urinary tract without causing noticeable discomfort, larger stones can cause a range of symptoms. One primary symptom is pain. Abdominal, lower back or pelvic pain can all indicate the presence of kidney stones. In addition, larger stones can injure the tissue that lines your urinary tract, causing bleeding and blood in your urine. If you develop any of these symptoms, seek medical attention to investigate the possibility of kidney stones.
Protein Intake Recommendations
Many Americans consume more protein than their bodies require, according to the Centers for Disease Control and Prevention. In addition to the risk of kidney stones, excess protein intake can strain your liver, so consuming a moderate amount of protein daily helps maintain your health. Adults between the ages of 19 and 70 generally require 46 grams of protein daily, while adults over age 70 require 56 grams, according to the CDC. If you have an existing kidney issue, such as a personal history of kidney stones, talk to your doctor about a safe protein intake level.
