How high uric acid levels put kidney at risk? 5 prevention tips

High uric acid levels can lead to formation of crystals leading to inflammation. Here is how it may affect your kidney too.

Written by: Jigyasa Sahay

Published: January 23, 2025, 12:00 PM IST

https://www.india.com/health/how-high-uric-acid-levels-put-kidney-at-risk-5-prevention-tips-7559998/

Chronic kidney disease, uric acid issues are on a surge. With increasing sedentary lifestyle, kidneys get affected in ways that we not even understand. Uric acid levels have an essential connection with the renal system too. Uric acid is a naturally occurring substance produced by the body during the breakdown of purines compounds found in foods like red meat, seafood, and alcoholic beverages. Typically, uric acid is dissolved in the blood and eliminated through the kidneys in urine. However, when the body produces too much uric acid or when the kidneys fail to excrete it efficiently, high levels of uric acid, or hyperuricemia, can develop. This condition can significantly impact kidney health, leading to a variety of complication such as stone formation and chronic kidney disease

Formation of Kidney Stones

One of the most common consequences of hyperuricemia is the formation of uric acid crystals, which can accumulate in the joints, causing gout, a type of inflammatory arthritis. According to Dr Manoj Arora, Director, Nephrology, Max Super Speciality Hospital, Shalimar Bagh, these crystals can also deposit in the kidneys, leading to the formation of uric acid kidney stones. Uric acid stones make up approximately 5-10% of all kidney stones, but their prevalence has been rising in recent years due to dietary and lifestyle factors. These stones can obstruct the urinary tract, leading to severe pain, hematuria (blood in urine), and potential kidney damage if left untreated.

Read more: High uric acid symptoms: 6 warning signs of crystal formation in hands and legs

Cause of uric acid crystals

The formation of these stones is influenced by several factors, including low urinary pH, dehydration, and high dietary intake of purines. When the urine is more acidic, it promotes the crystallization of uric acid. Dehydration further concentrates the uric acid in the urine, increasing the risk of stone formation.

Chronic Kidney Disease

Chronic hyperuricemia is a known risk factor for the development and progression of chronic kidney disease (CKD). Some studies have shown that elevated uric acid levels contribute to worsening of kidney function by promoting inflammation, oxidative stress, and fibrosis within kidney tissues. Over time, this can lead to a decline in kidney function and the development of CKD.

Uric acid-induced kidney damage can occur through various mechanisms, including the activation of pro-inflammatory pathways and the accumulation of urate crystals in the kidney tubules, leading to renal cell injury. Additionally, hyperuricemia is often associated with metabolic syndrome, obesity, hypertension, and diabetes—conditions that also place significant strain on the kidneys.

Prevention and Management Strategies

The management of hyperuricemia and its impact on kidney health involves both lifestyle modifications and medications.

Dietary changes, such as reducing the intake of purine-rich foods (e.g., organ meats, shellfish) and alcohol, can help lower uric acid levels.
Adequate hydration is also crucial in diluting uric acid in the urine, reducing the likelihood of crystal formation.
In more severe cases, medications such as urate-lowering drugs may be prescribed to reduce uric acid production or increase its excretion. These drugs can prevent the formation of uric acid crystals and the development of kidney stones.

Maintaining normal uric acid levels is vital for preserving kidney health and preventing complications like kidney stones and chronic kidney disease. Early detection and intervention can significantly reduce the risk of long-term renal damage.