Key points from article :
Adult's waist should be less than half their height to reduce health risks, NICE recommends.
Healthy BMI weight category could be carrying too much weight around the waist.
Some ethnic groups are more prone to this type of fat build-up around the waist, which is called "central adiposity".
This increases the risk of conditions like type 2 diabetes, high blood pressure, heart disease and stroke.
If you're 175cm tall, then your waist measurement should be less than 87.5cm - or half your height.
Dr Paul Chrisp (NICE) said the updated draft guidelines help people understand what factors affect their health.
Some say measuring the waistline doesn't work for people who are very short or older people over 60.
Waist-to-height ratio is an easy-to-use measure that identifies people at increased health risk.
Even young children were at risk of the effects of fat in the abdomen.
The updated guidelines suggest using waist-to-height ratio in children and young people.
Healthcare professionals and the public can comment on the guidelines before they are published in May.
