Which BMI range is considered protective in dialysis patients according to recent practice patterns?

Which BMI range is considered protective in dialysis patients according to recent practice patterns?

• A. 30-34.9 kg/m2
• B. 25-29.9 kg/m2
• C. 18.5-24.9 kg/m2
• D. 35-39.9 kg/m2

Answer: (A)

In dialysis patients, a higher body mass index often shows a protective association with survival—the so-called obesity paradox. The idea is that having more energy and protein reserves helps patients endure the catabolic stress of ESRD and dialysis, and may reflect better overall nutritional status. The BMI range of 30-34.9 kg/m2 represents mild to moderate obesity, which observational data have repeatedly linked with lower mortality risk in this population compared with normal or underweight categories. While BMI doesn’t distinguish fat from muscle and can be influenced by fluid status, this range consistently aligns with the practice pattern that maintaining BMI in the mildly obese range offers the most robust protective signal. Lower BMI lacks this advantage, and very high BMI can bring additional risks, so the protective range is considered to be 30-34.9 kg/m2.

In dialysis patients, a higher body mass index often shows a protective association with survival—the so-called obesity paradox. The idea is that having more energy and protein reserves helps patients endure the catabolic stress of ESRD and dialysis, and may reflect better overall nutritional status. The BMI range of 30-34.9 kg/m2 represents mild to moderate obesity, which observational data have repeatedly linked with lower mortality risk in this population compared with normal or underweight categories. While BMI doesn’t distinguish fat from muscle and can be influenced by fluid status, this range consistently aligns with the practice pattern that maintaining BMI in the mildly obese range offers the most robust protective signal. Lower BMI lacks this advantage, and very high BMI can bring additional risks, so the protective range is considered to be 30-34.9 kg/m2.