Urologist Cristina Barrera is shedding light on the hidden differences in bottled water. Though supermarket shelves offer countless varieties at various prices, these waters are far from identical. According to Dr. Barrera, mineral content in water can significantly influence your health.
In a recent TikTok video, she explained, “What do I look for as a urologist when I buy water? I focus on its mineralization.” Contrary to popular belief, water low in minerals isn’t necessarily better. “Water with weak mineralization is basically empty water, offering no valuable minerals to our diet,” she said.
Water does more than just hydrate; it can supply essential minerals important for overall well-being. However, some minerals like sodium can pose risks, especially for individuals prone to kidney stones. Dr. Barrera recommends choosing water with less than 10mg/L of sodium and a calcium content between 50 and 100mg/L. Though many brands lack sufficient magnesium, she strives to pick water with at least 10mg/L of magnesium, which supports kidney function.
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For those susceptible to kidney stones, paying close attention to mineral content is crucial. The NHS advises that such individuals consume up to three liters of water daily to reduce stone recurrence. Kidney stones form when waste products concentrate and crystallize in the kidneys, with calcium being a key contributor when it bonds with oxalates found in various foods.
People with kidney stones should avoid waters high in calcium, aiming instead for around 1g of daily calcium intake through their diet. Dr. Barrera emphasized: “Look for water with the lowest sodium possible. Magnesium is beneficial because it helps inhibit stone formation.”
Kidney stones come in different types, with calcium stones being the most prevalent. Uric acid stones arise from acidic urine, often diet-related, while struvite stones develop from infections. For uric acid stones, Dr. Barrera advises choosing water rich in bicarbonate to alkalize urine, aiding prevention. However, she cautions, “This bicarbonate should be paired with low sodium levels.”
Ultimately, Dr. Barrera reminds us that the best defense against kidney stones is maintaining proper hydration. Being mindful of the mineral makeup in your bottled water can make a significant difference to kidney health and overall well-being.