India, May 23 -- Ultra-processed foods leave chemical traces in the body and scientists are tracking them. A recent study led by Erikka Loftfield of the National Cancer Institute reveals that blood and urine samples can offer key insights into a person's diet, especially when it includes a high intake of packaged and convenience foods. Also read | Is this everyday snack setting you up for a lifetime of liver damage? Doctor shares 5 prevention tips

The research aimed to better understand the long-term health effects of ultra-processed food consumption. Findings show that biological markers in blood and urine can reliably indicate how much of these foods a person eats, offering a potential new tool for monitoring dietary habits and associa...