A healthy Body Mass Index (BMI) range for adults is typically considered to be between 18.5 and 24.9. This range indicates a lower risk of obesity-related health issues. A BMI below 18.5 suggests underweight, while a BMI above 24.9 indicates overweight or obesity, which can increase the likelihood of conditions such as diabetes, cardiovascular disease, and hypertension. While BMI is a useful screening tool, it does not account for factors like muscle mass, distribution of fat, or overall health status, which also play important roles in an individual's health.