Why Is Neck Size Important?
Neck size generally refers to the thickness of your neck and is measured by the circumference (length around). Moreover, knowing your neck size can be beneficial for a couple of reasons.
First, knowing your neck size is helpful when buying collared shirts. The proper neck measurements ensure your collar isn’t too tight or loose, so your outfit looks sharp.
In addition, neck circumference is strongly correlated with body weight, BMI, waist size, and waist-to-hip ratio1. Therefore, it’s a good predictor of metabolic syndrome, cardiovascular disease, and sleep apnea.
To illustrate, the chart below shows the relative fasting glucose, triglycerides, and blood pressure by neck size. For these metrics, a larger neck size puts you at risk for cardiometabolic diseases2.