Kidneys filter out excess fluids and dissolved substances from the bloodstream, performing a key excretory role. Malnutrition can contribute to diseases of these organs. A urologist andrologist from the SM-Clinic Center for Reproductive Health, Artur Bogatyrev, spoke with socialbites.ca about foods that may harm kidney function.
He notes that individuals with kidney concerns should limit foods high in oxalates, such as spinach, hazelnuts, chips, french fries, sorrel, beets, bran, and chocolate. It is also wise to watch potassium-rich foods like avocados, which can pose challenges for those with kidney issues.
“Potassium is broadly beneficial, especially for heart health. It helps regulate body fluids, supports cell buffering, and maintains electrolyte balance. Yet, when intake is excessive, it can lead to hyperkalemia,” Bogatyrev explained. He pointed to slow heart rate, nausea, and fatigue as common signs of elevated potassium levels.
He also cautioned against frequent consumption of beverages that are high in alkaloids, including coffee, strong tea, cola, and similar drinks. Regular use may contribute to stone formation in the kidneys. For most adults, limiting coffee to one serving per day is a prudent approach, with two cups being the upper limit for some individuals.
“Dairy products provide calcium, but very high intake can raise calcium concentrations in urine, increasing the risk of urinary stone formation,” the urologist warned.
Additionally, he advised moderation of butter, a source of cholesterol and saturated fat. Regularly consuming large amounts can raise the risk of heart disease, which in turn can influence kidney function.
High salt intake is another concern. The expert noted that excessive salt can accumulate in the body and disturb the body’s fluid balance and overall hydrolytic equilibrium.
“Purine-rich foods, including certain meats and liver, should be approached with caution. These substances boost uric acid production, forcing the kidneys to work harder. Overeating animal protein may contribute to kidney stone formation, and uric acid can accumulate in joints, potentially leading to arthritis,” Bogatyrev concluded.
In summary, a balanced approach to protein, minerals, and fluids is important for maintaining kidney health. Readers in North America are advised to discuss personalized dietary plans with a healthcare professional, especially if they have existing kidney concerns or related health conditions. This guidance aligns with general recommendations for renal care and can help reduce the risk of stone formation and electrolyte imbalances while supporting overall cardiovascular health as well.