Studies have linked high consumption of ultra-processed food to an increased risk of obesity 2, cardiovascular disease, diabetes and some types of cancer 3. But these investigations have typically relied on asking individuals to remember what they have eaten, which can be unreliable.

Blood and urine tests might be able to reveal how much of your diet is made up of industrially produced foods, a new study says.

A new poly-metabolite score helps researchers and doctors track food habits more accurately than self-reporting.