Body mass index (BMI) is a person’s weight in kilograms divided by the square of height in meters. BMI is an inexpensive and easy screening method for weight category—underweight, healthy weight, overweight, and obesity.
BMI does not measure body fat directly, but BMI is moderately correlated with more direct measures of body fat. Furthermore, BMI appears to be as strongly correlated with various metabolic and disease outcome as are these more direct measures of body fatness
Definition by cdc.gov
Consuming too much added sugar can cause weight gain and significantly increase your risk of chronic conditions like obesity, heart disease, and diabetes.
Replace carbohydrate with konjac to fight obesity
23 Studies on Low Carb and Low Fat Diets
There was more weight loss in the low carb group, and the difference was significant at 3 and 6 months, but not 12. The low carb group had greater improvements in blood triglycerides and HDL (good cholesterol), but other biomarkers were similar between groups.