The BMI 18.5–24.9 band applies to healthy adult men from 20 through the mid-60s. What changes with age is body composition, not the range itself — until you cross 65.
Men lose roughly 3–8% of muscle mass per decade after 30, faster after 60. Same weight, less muscle, more fat.
That's why two men at 5'10" and 175 lbs can look and function completely differently at 30 vs 65. Resistance training slows this.
BMI up to ~27 is protective. Being underweight after 65 is a stronger risk factor than being modestly overweight.
Track waist-to-height ratio and grip strength alongside weight. They catch what the scale can't.
Get your age-adjusted target.
Ideal Weight for Men →
BMI can label muscular athletes as overweight or obese. Here's when BMI misses the mark and what to use instead.
The clearest waist guideline for women, based on the NHS and Ashwell Waist-to-Height ratio — no charts, just one rule.
How age changes your healthy weight range, and the simple WHO/CDC formula that answers "how much should I weigh?".