How would you describe a healthy body? Is it thin? Round? Muscular? Lean? Supposedly, BMI can distinguish the healthiness of different body types. The BMI, or body mass index, is a measurement of body fat based on height and weight. To calculate it, you take a person’s weight and divide by the square of height. This ratio suggests weight categories that predict future health problems. Basically, if you are lighter, you have a lower BMI and if you’re heavier, you have a higher BMI. The CDC says, “It does not diagnose the body fatness or health of an individual.” However, most medical professionals treat the BMI as a measurement of body healthiness, regardless of what the BMI was intentionally made for. So, how accurate is the BMI really?

A study performed in 2016 compared weight and physical activity to the risk of cardiovascular disease. The subjects consisted of people who had an ideal BMI but didn’t exercise regularly, people who had an ideal BMI and did exercise regularly, people who had a higher BMI and didn’t exercise regularly, and people who had a higher BMI and did exercise regularly. The results were as follows. Some of those who were thin but were not active still had high risk of diabetes and heart disease. Same goes for those who had higher BMIs and also were not active. The groups of people who had the lowest risk of diseases were those who were consistently active, regardless of BMI.

Essentially, BMI did not accurately predict the healthiness of the individuals. Just because someone has a low BMI does not mean that they are free of any heart diseases or diabetes. On the other hand, just because someone has a high BMI does not mean that they are unhealthy and prone to disease. Instead, the physical activeness of an individual is the best determining factor of one’s healthiness.




