Its purpose is to indicate if people have a weight that is healthy, given their height.
I will discuss the likelihood of finding a romantic partner within a suitable weight range for you, depending on which country you live in.
In the 30 to 34 age group there are 38 women with a BMI below 25 for every 100 guys.
From a female perspective, chances for finding a healthy weighing male are slimmer still.
For a woman looking to meet a guy not considered overweight or obese, she will find that 29 out of 100 men fall into this category in the US in the 30 to 34 age group.
I started off saying that most people look for somebody in the healthy weight range.
It has in fact been like that for over a decade for this age group.
If using BMI estimates for 1990, there would be 63 non-overweight women in the US per 100 males, placing the US as the 38th lowest in the aforementioned ranking.
If to check back with China, we find there 78 women with a BMI below 25 per 100 guys.
The United States ranks as having the 20th lowest amount of women who are not overweight relative to their number of fellow countrymen.
Actual estimates for the number of men and women within different weight ranges are presented.
Special focus is given to the situation in the United States.
There is a tendency that once a few extra pounds come on, they lay the foundation for more to come.