What is a Healthy Weight?
The range of healthy body weights is calculated based on BMI (Body Mass Index). Given a specific height, this calculator uses standard algorithms to calculate the range of possible body weights that fall within different categories of weight determined by BMI.
An adult aged 18 or older with a BMI between 18.5 and 25 kg/m² is typically defined as having a healthy or normal weight. While accurate for an "average" person, this means that it is possible to be categorized as overweight or underweight and still be "healthy," but this requires a more generalized calculation to determine – likely with the help of a medical professional.
BMI Classifications
| Classification | BMI Range |
|---|---|
| Severely Underweight | < 16 |
| Underweight | 16 - 18.5 |
| Healthy Weight | 18.5 - 25 |
| Overweight | 25 - 30 |
| Obese Class I | 30 - 35 |
| Obese Class II | 35 - 40 |
| Obese Class III | > 40 |
Effects of Being Underweight, Overweight, and Obese
Being underweight is associated with a host of medical conditions that include hyperthyroidism, cancer, or tuberculosis. It can also cause issues including low energy levels, anemia, and a weak immune system.
Overweight individuals have an increased risk of controlling energy intake more than individuals with a healthy weight. Studies show higher mortality rates compared to healthy weight ranges due to increased risk of heart disease and diabetes.
Obesity greatly increases the risk of cardiovascular diseases such as heart disease and stroke as well as hypertension, type 2 diabetes, and musculoskeletal disorders. It is classified as one of the leading preventable causes of death worldwide.
Maintaining a Healthy Weight
Diet and Nutrition
Managing weight can largely be reduced through changes in diet and exercise. The WHO recommends limiting intake of calorie-dense foods, total fats, and sugars, while increasing the consumption of fruits, vegetables, legumes, whole grains, and nuts.
Physical Activity
It is recommended to engage in regular physical activity, defining this as 60 minutes a day for children, and 150 minutes total per week for adults. Individual responsibility can only be fully effective if people have access to a healthy lifestyle in terms of education and environment.