Study confirms link between 'forever chemicals' and liver cancer risk - Insider

Within that population, the research team found 50 participants who eventually developed liver cancer, according to a news release from Keck.

People in the top 10% of PFOS exposure were four and a half times more likely to develop liver cancer compared to people with the lowest levels of PFOS in their blood, the researchers found.

To prove the association, the research team compared the 50 people who developed liver cancer with a similar sample of 50 people who did not develop the disease.