The author re-examines the existing close inter-relationships among bodyweight (weight), fasting plasma glucose (FPG), and HbA1C (A1C) using the Pearson correlation coefficient “R” of statistics to calculate different degrees of association between two datasets. If R is greater than 50%, then it indicates a strong inter-relationship between two datasets or two curves.

He also reconfirms the prediction accuracy of his developed weight and predicted FPG prediction models. If the prediction accuracy is greater than 90%, then the developed prediction models can be continuously used daily in controlling his diabetes conditions.

This investigation utilized his daily weight and finger-piercing FPG data in conjunction with the developed daily finger-based A1C prediction over a period of ~5.5 years from 1/1/2016 to 6/21/2021.

In summary, obesity is the root cause of the following three chronic diseases: diabetes, hypertension, and hyperlipidemia. They can also affect many other related complications including, but not limited to, cardiovascular disease (CVD), stroke, chronic kidney disease (CKD), foot ulcer, diabetic retinopathy, neuropathy, hypothyroidism, dementia, and even cancer. As a result, individuals should focus on weight control as their first and the most important priority in order to manage chronic diseases and also prevent many complications from occurring.

In the United States, approximately 36.5% of adults are obese and another 32.5% are overweight. In other words, there are only 31% of American adults who are within the normal range of body weight (BMI < 25). The author weighed 220 lbs. (110 kg) with a BMI of 32 in 2010. From 2015 to 2019, his average weight was reduced to 173 lbs. (78.6 kg) with a BMI of 25.54. Recently, during 2020-2021, his weight has further decreased to 169 lbs. (76.8 kg) with a BMI of 24.95. From an 11-year journey, he definitely understands how difficult it was in reducing his bodyweight. During the past decade, he conducted medical research work on metabolism, endocrinology, nutrition, and probability of developing various complications resulted from chronic diseases. The “meal portion” or “food quantity” is one of the most important contributing factors. In addition, adequate exercise assisted with his weight reduction. The higher correlation coefficients among weight, glucose components, and HbA1C have been demonstrated many times in his published papers. He has proven that the most efficient way to control his glucose is to concentrate on his body weight reduction first.