A patient's neck circumference increases with obesity. Neck circumference is an index of upper body fat distribution.


Neck Circumference

Weight Status


< 34 cm

healthy weight


>= 36.5 cm

BMI >= 30 kg per sq m


< 37 cm

healthy weight


>= 39.5 cm

BMI >= 30 kg per sq m


An elevated neck circumference is also associated with insulin resistance.


The shirt neck size can be used as a quick screen for neck circumference.

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