**What is BMI?**

- Body Mass Index (BMI) is a numerical value calculated based on an individual's weight and height.
- It estimates body fatness and helps classify individuals into different weight categories.
- Healthcare professionals commonly use BMI as a screening tool to assess the risk of weight-related health conditions.

**How is BMI Calculated?**

- BMI is calculated using the formula: BMI = weight (kg) / (height (m)^2.
- For those using pounds and inches, the formula can be modified: BMI = (weight (lbs) / (height (in)^2) x 703.

The result is a unitless number typically expressed as kg/m^2 or lbs/in^2.

**Interpreting BMI Categories:**

- BMI values fall into different categories, indicating different levels of body weight relative to height.
- Common categories include underweight (BMI
- However, BMI categories may vary based on age, sex, and ethnicity.