Some people say all the publicity about using the BMI is part of a conspiracy by the weight loss industry, and the BMI serves no useful purpose.  This is wrong.  There are many studies that show that people who have a higher BMI are at risk for serious illnesses.  For instance, the higher the BMI,  the greater the risk of a heart attack.  Most importantly, the reverse is true.  If you decrease your BMI you decrease your risk of stroke and heart attack.   Another study in women shows that women with a BMI over 29 have a 3.3 times greater chance of a fatal or non-fatal heart attack within the next eight years than women with a BMI less than 21.  BMI values between 18.5 and 24.9 are considered normal.  These results were adjusted for age and smoking status, meaning that comparisons were made between women of the same age and smoking status so any differences in heart attack risk could not be attributed to either of those factors. 

Insights For Health Bottom Line: A high BMI increases your health risks for many serious medical conditions, but other factors can also affect those risks.  BMI is a modifiable risk factor – something you can do something about to lower your risks.

Next time we’ll consider the myth that for some people a high BMI is normal.

For Your Health – Dr. Bob