BMI of 16 — What does it mean?
Instant answer: A BMI of 16 is classified as underweight.
Persistent underweight can indicate inadequate caloric intake, malabsorption, hyperthyroidism, or undertreated chronic illness — a clinical evaluation is sensible.
Weight examples that give a BMI of 16
| Height | Weight (kg) | Weight (lbs) |
|---|---|---|
| 160 cm (5'3") | 41 | 90 |
| 165 cm (5'5") | 43.6 | 96 |
| 170 cm (5'7") | 46.2 | 102 |
| 175 cm (5'9") | 49 | 108 |
| 180 cm (5'11") | 51.8 | 114 |
| 185 cm (6'1") | 54.8 | 121 |
Practical next steps
- Prioritise protein at every meal (1.2–1.6 g per kg of body weight).
- Use calorie-dense additions like nuts, olive oil, and avocado.
- Strength-train at least twice a week to convert added calories into muscle.
- Speak to a clinician if weight loss was unintentional.
Frequently asked questions
What does a BMI of 16 mean?
A BMI of 16 falls into the underweight category as defined by the World Health Organization. Persistent underweight can indicate inadequate caloric intake, malabsorption, hyperthyroidism, or undertreated chronic illness — a clinical evaluation is sensible.
Is a BMI of 16 healthy?
This BMI is outside the WHO healthy range of 18.5–24.9 and falls into the underweight category.
What weight gives a BMI of 16 at 170 cm?
At 170 cm, a BMI of 16 corresponds to roughly 46.2 kg.