Calculadora de IMC Geriátrico (≥ 65 anos)

The Geriatric BMI Calculator is a tool specifically designed for people aged 65 and older. Unlike traditional BMI, which uses standardized ranges for adults, this calculator adopts the adjustments recommended by the World Health Organization (WHO) for the elderly. The calculation is the same: BMI = weight (kg) divided by height (m) squared. However, the interpretation differs: for seniors, the normal weight range is considered between 22 and 27 kg/m². This is because aging leads to changes in body composition, such as loss of muscle and bone mass, requiring a more appropriate nutritional assessment.

When to use this calculator? It is intended for healthcare professionals, caregivers, and seniors who want to monitor nutritional status more accurately. For example, a senior with a BMI of 23.5 would be within the ideal range, while the same value would be considered normal in standard BMI. A BMI below 22 may indicate risk of malnutrition, common in frail elderly, and above 27 may signal overweight or obesity, associated with cardiovascular and joint problems. It is important to remember that BMI is an initial indicator and does not replace a complete clinical evaluation.

Important cautions: Geriatric BMI does not account for fat distribution or muscle mass. Seniors with good muscle mass may have a high BMI without excess fat. Additionally, height may decrease with age due to vertebral compression, so measure current height. The calculator is a screening tool, not a diagnosis. For a more detailed analysis, consult a nutritionist or geriatrician.