{"schema_version":"2026-06-12","inputs":{"height":178,"weight":80,"waist":86},"bmi":25.2,"category":"overweight","healthy_weight_range_kg":{"min":59,"max":79},"equation":"BMI = weight kg / (height m)^2 with NHS categories. Waist-to-height ratio per NHS guidance (0.5 or above signals increased risk).","units":{"mass":"kg","height":"cm","waist":"cm"},"waist_to_height_ratio":0.48,"wthr_category":"healthy","license":"https://creativecommons.org/licenses/by/4.0/","source":"https://example.fitgauge.placeholder/statistics/","disclaimer":"Informational only, not a medical diagnosis. BMI does not distinguish muscle from fat; waist-to-height ratio is often the better single number."}