Body mass index (BMI) is a commonly used index to measure obesity and health in the world. The normal body mass index is between 20 and 25. If it exceeds 25, it means overweight, and if it exceeds 30, it means obesity.
Extension:
Body mass index (BMI), referred to as body mass index, is a commonly used international standard to measure obesity and health.
The formula is: body mass index = weight ÷ height 2. (Weight unit: kg; Height unit: meter. )
Body mass index was first put forward by Belgian generalist kettler in the middle of19th century.
In September, 20021,in a paper published in PLoS Genetics, researchers analyzed how genes and smoking affect individual body mass index based on the genome sequence numbers of 390,000 Britons. They found that genes can explain 50% difference in body mass index between individuals, and self-reported smoking can explain 2% difference in body mass index.
Because smoking can lead to DNA methylation (a biomarker), they found that 62 methylation sites related to smoking can explain the 22% difference in body mass index, which is far greater than the results obtained by self-report. This study shows that biomarkers may help to measure the impact of lifestyle and other factors on health more accurately.
Baidu Encyclopedia-Body Mass Index