Children from economically disadvantaged backgrounds were at higher risk for atherosclerosis, according to a study reported by Reuters. 

For the new study, children from 1,477 families were recruited into the study before their first birthday and examined every two years starting in 2004. The thickness of the children’s carotid intima-media was evaluated in 2015.

When the researchers divided the children into four groups according to their family’s economic background, they found that the most economically disadvantaged children were 46 percent more likely than children from the wealthiest families to have the thickest intima-media measurements.

The increased thickness means those children’s veins work as if they’re at least eight years older than they really are, the research team writes in the Journal of the American Heart Association.