Why doesn’t BMI directly measure body fat?
BMI uses only height and weight, so it never measures body fat directly. Learn why it confuses muscle for fat and what to use instead.
What do adult BMI categories mean?
Adult BMI categories explained: underweight, healthy, overweight and the three obesity classes, plus ethnicity cut-offs and what BMI misses.
How is BMI calculated?
BMI is weight in kg divided by height in metres squared. Learn the metric and imperial formulas, categories, a worked example, and BMI limits.
When might genetic obesity be suspected?
Genetic obesity is suspected with severe early-childhood obesity and extreme hunger. Learn the red flags, the genes, and when testing helps.
What is polygenic obesity?
Polygenic obesity is common obesity driven by many genes. Learn how genes shape appetite and weight, and what you can do about it.
Can genetics influence resting metabolic rate?
Yes, genes shape resting metabolic rate through body composition. See how much your DNA affects calorie burn, and how to raise it.
How can genes affect hunger and appetite?
Genes shape hunger through leptin, ghrelin, FTO and MC4R. See how your DNA affects appetite, and how to work with your biology.
How much can genetics influence body weight?
Genes explain 40-70% of body weight differences. See how much genetics really influences your weight, and what you can still control.
What is adaptive thermogenesis after weight loss?
What adaptive thermogenesis after weight loss is, explained. Your body burns 100-300 fewer calories daily than expected, driving diet plateaus and regain.
How does aging affect basal metabolic rate?
How aging affects basal metabolic rate, explained. Metabolism stays stable from your 20s to 50s and only declines after 60, near 0.7% a year.